CN208686864U - A kind of hydraulic damper of anti-detonation - Google Patents
A kind of hydraulic damper of anti-detonation Download PDFInfo
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- CN208686864U CN208686864U CN201821445373.XU CN201821445373U CN208686864U CN 208686864 U CN208686864 U CN 208686864U CN 201821445373 U CN201821445373 U CN 201821445373U CN 208686864 U CN208686864 U CN 208686864U
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Abstract
The utility model discloses a kind of hydraulic dampers of anti-detonation, belong to damping unit field, solve the problems, such as that hydraulic increase may cause detonation in piston cylinder, its key points of the technical solution are that including piston cylinder and oil storage cylinder, piston cylinder is placed in oil storage cylinder, shoe cream room is formed between piston cylinder outer wall and the oil storage inside wall of cylinder, piston is axially slidably connected in piston cylinder, it is in epicoele and cavity of resorption that piston, which separates piston cylinder inner space, piston end surface circumferentially offers through-hole, piston cylinder one end is equipped with bottom valve, bottom valve is check valve and its conducting direction is that shoe cream room flows to cavity of resorption, piston coaxial is fixedly connected with piston rod, piston rod, which extends to separate bottom valve one end and passes through piston cylinder end face, to be extended to outside oil storage cylinder, piston cylinder offers pilot hole, pilot hole and piston rod clearance fit, the utility model is structurally reasonable, when damper is shunk, Gap of the extra damping fluid between pilot hole and piston rod flows into shoe cream room in epicoele, to avoid piston cylinder detonation.
Description
Technical field
The utility model relates to a kind of damping units, more specifically, it relates to a kind of hydraulic damper of anti-detonation.
Background technique
Damper is to provide the resistance of movement, the device of depletion kinergety.Fluid power in automobile suspension system subtracts
Shake device is exactly a kind of common damper.For inhibiting concussion when rebound after spring shock-absorbing and from the impact on road surface.
When damper is shunk, the downward cavity direction sliding of piston, cavity of resorption volume reduces and the volume of epicoele increases, but due to
The presence of piston rod, the volume that epicoele increases are less than the volume that cavity of resorption reduces, so as to cause total measurement (volume) in piston cylinder reduces and hinders
Buddhist nun's liquid is difficult to compress, and hydraulic increase may cause detonation in last piston cylinder.
The new technical solution of one kind is provided thus to solve the above technical problems.
Utility model content
In view of the deficienciess of the prior art, the utility model lies in that provide a kind of hydraulic damper of anti-detonation, when subtracting
When shaking device contraction, gap of the extra damping fluid between pilot hole and piston rod flows into shoe cream room in epicoele, to avoid living
Plug cylinder detonation.
To achieve the above object, the utility model provides following technical solution: a kind of hydraulic damper of anti-detonation, packet
Piston cylinder and oil storage cylinder are included, the piston cylinder is placed in oil storage cylinder, and storage is formed between the piston cylinder outer wall and the oil storage inside wall of cylinder
Oil pocket, axially slidably connects piston in the piston cylinder, and it is in epicoele and cavity of resorption that the piston, which separates piston cylinder inner space,
The piston end surface, which circumferentially runs through, offers through-hole, described piston cylinder one end be equipped with bottom valve, the bottom valve be check valve and its
Conducting direction is that shoe cream room flows to cavity of resorption, and the piston coaxial is fixedly connected with piston rod, and the piston rod is to far from bottom valve one
End extends and extends to outside oil storage cylinder across the end face of piston cylinder and oil storage cylinder, and the piston cylinder is offered to be passed through for piston rod
Pilot hole, the pilot hole and piston rod clearance fit.
By using above-mentioned technical proposal, when damper is shunk, extra damping fluid is from pilot hole and piston in epicoele
Gap between bar flows into shoe cream room, to avoid piston cylinder detonation；When damper is upheld, cavity of resorption volume increases and generates negative
It presses, the damping fluid in epicoele enters cavity of resorption from the first oil-through-hole, and the damping fluid in shoe cream room is entered in cavity of resorption by bottom valve to mend
Fill the damping fluid that piston cylinder lacks.
The utility model is further arranged to: the bottom valve includes the valve seat for being fixedly connected on piston cylinder, the company of sliding axially
It is connected to the slide bar of valve seat and is fixedly connected on slide bar close to the gasket of piston one end, the jack rod sleeve, which is equipped with, contradicts valve seat for gasket
The first spring, the valve seat offers the recirculation hole passed through for the slide bar, the recirculation hole and slide bar clearance fit.
By using above-mentioned technical proposal, when shock absorber, cavity of resorption volume increases and epicoele volume shows small, this is at present
Cavity pressure reduces that cavity of resorption and shoe cream room is made to form pressure difference, and damping fluid extruding pad, makes its gram under the action of pressure difference
The elastic force of spring is taken to mobile close to the direction of piston, at this time the not re-closed recirculation hole of gasket, the damping fluid in shoe cream room is from stream
Through-hole flows into cavity of resorption the damping fluid that shoe cream room is flowed into the gap supplemented between pilot hole and piston rod；When damper compresses
When, the increase and decrease of cavity of resorption volume is small and epicoele volume increases, and descend cavity pressure to increase that cavity of resorption and shoe cream room is made to form pressure difference at this time,
Damping fluid extruding pad contacts at it on valve seat under the action of pressure difference, and then prevents damping fluid from stream recirculation hole closing
Through-hole flows into shoe cream room.
The utility model is further arranged to: the slide bar is arranged with the sealing of opening and closing recirculation hole close to one end of gasket
Circle.
By using above-mentioned technical proposal, when damper compression, under damping fluid extruding, reduce gasket using sealing ring
Gap between valve seat further promotes the leakproofness of bottom valve.
The utility model is further arranged to: the runner that the slide bar opens up, and the runner is open at one end to be opened in slide bar
End face far from gasket, another end opening of the runner are opened in one end side wall of the slide bar close to gasket.
By using above-mentioned technical proposal, when shock absorber, damping fluid opens bottom valve and enters in cavity of resorption from shoe cream room,
Slide bar is slided to gasket direction at this time, and the opening for being opened in runner on slide bar side wall is located in cavity of resorption, using runner by cavity of resorption
It is connected to shoe cream room, further facilitates damping fluid and enter cavity of resorption, it can be by the size of control cross section of fluid channel product to control oil storage
Chamber enters the speed of cavity of resorption, also can control the size of the damping force when shock absorber.
The utility model is further arranged to: the valve seat contacts at oil storage cylinder end face inner wall, institute far from one end of piston
It states valve seat wall and offers intercommunicating pore, the intercommunicating pore connection valve seat inside and shoe cream room.
By using above-mentioned technical proposal, axial support force is provided for piston cylinder and oil storage cylinder using valve seat, prevents piston
Cylinder and oil storage cylinder are compressed axially between the two, limit the axial distance between piston cylinder and oil storage cylinder, thus prevent piston cylinder and
Impact between oil storage cylinder protects piston cylinder and oil storage cylinder.
The utility model is further arranged to: the piston cylinder includes that the first cylinder body and closed piston cylinder open at one end are opened
The guide pad of mouth, the pilot hole are opened in guide pad.
The tolerance dimension of pilot hole is more demanding, and difficulty of processing is larger thus, by using above-mentioned technical proposal, guide pad
Volume is less than piston cylinder, to process simpler, and when there is unqualified part, loses also less.
The utility model is further arranged to: the oil storage cylinder includes the second cylinder body of the second cylinder body and closing open at one end
The oil seal cover of opening, the oil seal cover are fixedly connected with oil sealing, and the oil-sealing sleeve is set to piston rod.
Piston cylinder is inserted from the opening of oil storage cylinder when assembling oil storage cylinder and piston cylinder by using above-mentioned technical proposal
Enter, then using the opening of oil seal cover closing oil storage cylinder, facilitates the assembly of oil storage cylinder and piston cylinder；Reduce piston rod using oil sealing
Gap between oil storage cylinder reduces gap location leakage of the damping fluid between piston rod and oil storage cylinder.
The utility model is further arranged to: the piston rod is arranged with the second spring for holding out against oil sealing, and described second
Spring one end contacts at guide pad.
By using above-mentioned technical proposal, using spring top clamping oil sealing, when preventing damper from shrinking, oil sealing is in piston rod
It slips away under drive from cylinder body, keeps the connection structure of oil sealing and cylinder body more stable.
The utility model is further arranged to: the piston rod is arranged with oil sheet, described oil sheet one end and oil
Sealing label closes, and the oil sheet contradicts the one end of second spring far from guide pad far from one end of oil sealing.
By using above-mentioned technical proposal, increase the contact area for contradicting spring and oil sealing using oil sheet, reduction is supported
The pressure between spring and oil sealing is touched, oil sealing is avoided to be damaged by pressure by conflict spring.
The utility model is further arranged to: the guide pad opens up installation annular groove close to the end face of the first cylinder body, described
First cylinder body is placed in installation annular groove close to one end of guide pad, and side wall and the oil storage inside wall of cylinder of the guide pad closely paste
Close, the guide pad side wall circumferentially opens up several oil-recovery tanks, the oil-recovery tank by between guide pad and oil seal cover space and storage
Oil pocket connection.
By using above-mentioned technical proposal, when damper is shunk, extra damping fluid is from pilot hole and piston in epicoele
Gap between bar flows into the space between guide pad and oil seal cover, then flows into shoe cream room from oil-recovery tank again, using leading
Piston cylinder is fixedly connected with oil storage cylinder to block, keeps piston cylinder and oil storage cylinder connection structure more stable.
In conclusion the utility model has the following beneficial effects:
First, gap of the extra damping fluid between pilot hole and piston rod flows into epicoele when damper is shunk
Shoe cream room, to avoid piston cylinder detonation；
Second, the slide bar in bottom valve offers runner, when shock absorber, damping fluid opens bottom valve and enters from shoe cream room
In cavity of resorption, slide bar is slided to gasket direction at this time, is opened up runner and is located in cavity of resorption with the opening on slide bar side wall, utilizes runner
Cavity of resorption is connected to shoe cream room, damping fluid is further facilitated and enters cavity of resorption, it can be by the size of control cross section of fluid channel product to control
Shoe cream room processed enters the speed of cavity of resorption, also can control the size of the damping force when shock absorber.
Detailed description of the invention
Fig. 1 is the sectional view of the present embodiment；
Fig. 2 is the structural schematic diagram that the present embodiment is used to show piston；
Fig. 3 is the A-A sectional view of Fig. 2；
Fig. 4 is the explosive view that the present embodiment is used to show guide pad；
Fig. 5 is the sectional view that the present embodiment is used to show bottom valve.
Appended drawing reference: 1, piston cylinder；2, piston；3, piston rod；4, epicoele；5, cavity of resorption；6, screw rod；7, locking nut；8,
First oil-through-hole；9, the second oil-through-hole；10, the first annular groove；11, the second annular groove；12, valve block；13, oil storage cylinder；14, the first cylinder
Body；15；Bottom valve；16, guide pad；17, pilot hole；18, annular groove is installed；19, oil-recovery tank；20, shoe cream room；21, valve seat；22, sliding
Bar；23, gasket；24, recirculation hole；25, baffle；26, the first spring；27, sealing ring；28, runner；29, intercommunicating pore；30, second
Cylinder body；31, oil seal cover；32, oil sealing；33, second spring；34, oil sheet；35, dust cover；36, limited block；37, rubber ring；
38, upper lift ring；39, lower lift ring.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
The same or similar label correspond to the same or similar components in the attached drawing of the utility model embodiment；It is practical at this
In novel description, it is to be understood that if the orientation or positional relationship for having the instructions such as term " on ", "lower", "left", "right" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore retouch in attached drawing
The term for stating positional relationship only for illustration, should not be understood as the limitation to this patent, for the common skill of this field
For art personnel, the concrete meaning of above-mentioned term can be understood as the case may be.
A kind of hydraulic damper of anti-detonation, as shown in Figure 1, include cylindrical position piston cylinder 1, be in axial sliding connection in
Piston 2 in piston cylinder 1 and the piston rod 3 for being fixedly and coaxially connected piston 2.Piston 2, which separates 1 inner space of piston cylinder, to be presented
Damping fluid, the preferred silicone oil of damping fluid are filled in chamber 4 and cavity of resorption 5, epicoele 4 and cavity of resorption 5.2 end face of piston, which is circumferentially run through, to be offered
The through-hole that epicoele 4 is connected to cavity of resorption 5.When damper stretches, damping fluid is circulated by through-hole in epicoele 4 and cavity of resorption 5, damping
By biggish resistance when liquid stream crosses through-hole, to slow down the speed of the sliding of piston 2, reach damping.
As shown in Figure 1, the installation and removal of piston 2 for convenience, close to one end of piston 2, coaxially fixation connects piston rod 3
It is connected to screw rod 6, the diameter of screw rod 6 is less than the diameter of piston rod 3, and piston 2 is sheathed on screw rod 6, and screw rod 6 is threaded with piston
2 contact at the locking nut 7 of 3 end face of piston rod.Piston 2 is fixedly connected on piston rod 3 with screw rod 6 and locking nut 7, is convenient for
Peace turns and disassembly is also convenient for the replacement of piston 2 when piston 2 damages in use.
As shown in Figures 2 and 3, through-hole includes the first oil-through-hole 8 and the second oil-through-hole 9, and the first oil-through-hole 8 and second is logical oily
There are four hole 9 is equal and it is inclined to set.It is logical that the distance between first oil-through-hole, 8 upper end and 2 central axis of piston are greater than first
The distance between 8 lower end of oilhole and 2 central axis of piston；The distance between second oil-through-hole, 9 upper end and 2 central axis of piston are small
In the distance between 9 lower end of the second oil-through-hole and 2 central axis of piston.2 both ends end face of piston coaxially offers the first annular groove 10
With the second annular groove 11, wherein the first annular groove 10 is located at 2 edge of piston and is connected to the side wall of piston 2, the second annular groove 11 is straight
Diameter is less than the first annular groove 10.First oil-through-hole, 8 upper end is connected to the first annular groove 10 of 2 upper surface of piston, under lower end and piston 2
Second annular groove 11 of end face is connected to；And the upper end of the second oil-through-hole 9 is connected to the second annular groove 11 of 2 upper surface of piston, lower end
It is connected to the first annular groove 10 of 2 lower end surface of piston.Screw rod 6 is arranged there are two valve block 12, and valve block 12 contacts at the two of piston 2 respectively
End.The upper surface of the valve block 12 of 2 top of piston contacts at 3 end face of piston rod, and the valve block 12 of 2 lower section of piston is made in locking nut 7
2 lower end surface of piston is contacted under.The outer diameter of valve block 12 is greater than the second annular groove 11 and less than the first annular groove 10, thus valve block 12
Second annular groove 11 of 2 both ends of the surface of piston is closed.When damper compresses, piston 2 is mobile towards the direction of cavity of resorption 5,5 volume of cavity of resorption
Reduce and the volume of epicoele 4 increases, so that pressure be made in cavity of resorption 5 to increase, the pressure in epicoele 4 reduces, and squeezes cavity of resorption 5 is hydraulic
Pressure, the valve block 12 of 2 lower end of piston contacts at 2 end face of piston so as to make its close the first oil-through-hole 8, and 2 upper end of piston
Valve block 12 is then damped liquid and pushes up, so that the second oil-through-hole 9 be made to be connected to, then the damping fluid in cavity of resorption 5 is logical by second
Oilhole 9 flows into epicoele 4.When shock absorber, piston 2 is moved up, and 4 volume of epicoele reduces and the volume of cavity of resorption 5 increases, from
And increasing pressure in epicoele 4, the pressure in cavity of resorption 5 reduces, to form pressure difference between epicoele 4 and cavity of resorption 5.In pressure difference
Under effect, the valve block 12 of 2 top of piston contacts at 2 end face of piston so as to make it close the second oil-through-hole 9, and below piston 2
Valve block 12 be then damped liquid and push down on, so that the first oil-through-hole 8 be made to be connected to, then damping fluid passes through the first oil-through-hole 8 stream
Enter in cavity of resorption 5.Pass through the first oil-through-hole 8 when damper stretches or the second oil-through-hole 9 realize the circulation of epicoele 4 and cavity of resorption 5,
To which the damping force being subject to when stretching is close.
As shown in Figures 2 and 3, because the first oil-through-hole 8 and the second oil-through-hole 9 are inclined to set, drill bit when punching
The bottom surface of the second annular groove 11 can be favoured, thus when drill bit applies pressure to the bottom surface of the second annular groove 11, the bottom of the second annular groove 11
Face can apply the support force of the bottom surface perpendicular to the second annular groove 11 to drill bit, and then upward deflect drill bit, finally result in drilling
Position generate offset.In order to solve the above-mentioned technical problem, 11 bottom surface of the second annular groove is inclined to set, two the second annular grooves 11
Bottom surface is tilted close to a side at 2 center of piston to direction close to each other, to reduce the bottom surface method of drill bit and the second annular groove 11
The angle of line, and then reduce the angle between the bottom surface support force and drill bit that apply to drill bit of the second annular groove 11, finally reduce
The deflection angle of drill bit positions the first oil-through-hole 8 and the second oil-through-hole 9 more accurate.
As shown in Figure 1,2 slide downward of piston, 5 volume of cavity of resorption reduces and the volume of epicoele 4 increases when damper is shunk
Greatly, but due to the presence of piston rod 3, the volume that epicoele 4 increases is less than the reduced volume of cavity of resorption 5, so as to cause total in piston cylinder 1
Volume reduces, and since damping fluid is difficult to compress, hydraulic increase may cause detonation in last piston cylinder 1, thus outside piston cylinder 1
It is arranged with oil storage cylinder 13, oil storage cylinder 13 is cylindrical, and piston cylinder 1 is coaxially placed through in oil storage cylinder 13.1 outer wall of piston cylinder and oil storage
There are gaps to form shoe cream room 20 between in cylinder 13.Piston cylinder 1 includes the first cylindric cylinder body 14 of both ends open, opening and closing the
The bottom valve 15 and the first cylinder body 14 of closing of opening of one cylinder body 14 far from 3 one end of the piston rod guiding open at one end far from bottom valve 15
Block 16.Guide pad 16 offers the pilot hole 17 passed through for piston rod 3, pilot hole 17 and 3 clearance fit of piston rod.Bottom valve 15 is
Check valve and its conducting direction are that shoe cream room 20 flows to cavity of resorption 5.When damper is shunk, in epicoele 4 extra damping fluid from
Gap between pilot hole 17 and piston rod 3 flows into shoe cream room 20, to avoid 1 detonation of piston cylinder；When damper is upheld, under
5 volume of chamber increases and generates negative pressure, and the damping fluid in epicoele 4 enters cavity of resorption 5 from the first oil-through-hole 8, the damping in shoe cream room 20
Liquid is entered in cavity of resorption 5 by bottom valve 15 to supplement the damping fluid that piston cylinder 1 lacks.
As shown in figure 4, in order to enhance the connection structure between piston cylinder 1 and oil storage cylinder 13, guide pad 16 is cylindrical simultaneously
And its lower end surface coaxially offers installation annular groove 18, installation annular groove 18 is connected to 16 side wall of guide pad, the inner wall of the first cylinder body 14
It fits closely in the side wall of installation annular groove 18.The side wall of guide pad 16 is fitted closely with 13 side wall of oil storage cylinder, 16 side wall of guide pad
Three oil-recovery tanks 19 circumferentially are opened up, space between guide pad 16 and 13 upper end of oil storage cylinder is connected to by oil-recovery tank 19 with shoe cream room 20.
When damper is shunk, in epicoele 4 gap of the extra damping fluid between pilot hole 17 and piston rod 3 flow into guide pad 16 with
It in space between 13 upper surface of oil storage cylinder, is then flowed into shoe cream room 20 from oil-recovery tank 19 again, using guide pad 16 by piston
Cylinder 1 is fixedly connected with oil storage cylinder 13, keeps piston cylinder 1 and 13 connection structure of oil storage cylinder more stable.
As shown in figure 5, bottom valve 15 includes the valve seat 21 for being fixedly connected on the first cylinder body 14, is in axial sliding connection in valve seat 21
Slide bar 22 and be fixedly connected on slide bar 22 close to the gasket 23 of 2 one end of piston.Valve seat 21 is in the cylindrical shape of lower ending opening, valve seat
21 upper surfaces coaxially offer the recirculation hole 24 passed through for slide bar 22.22 upper end of slide bar passes through recirculation hole 24 and extends into down
Chamber 5,22 upper end of slide bar are fixedly and coaxially connected with gasket 23, and 22 lower thread of slide bar is connected with baffle 25.Slide bar 22 is arranged with
One spring 26,26 lower end of the first spring contact at 25 end face of baffle, and 26 upper end of the first spring contacts at 21 upper end inner wall of valve seat.?
Under the elastic force of first spring 26, gasket 23 contacts at 21 upper end outer end face of valve seat, so that gasket 23 closes recirculation hole 24.Instantly
5 pressure of chamber reduces and cavity of resorption 5 and shoe cream room 20 is made to form pressure difference, and damping fluid flows up to push up under the action of pressure difference
Gasket 23 is opened, makes it overcome the elastic force of spring mobile to the direction of close piston 2, at this time the not re-closed recirculation hole 24 of gasket 23,
Damping fluid in shoe cream room 20 flows into cavity of resorption 5 from recirculation hole 24 with clearance flow between supplementing between pilot hole 17 and piston rod 3
Enter the damping fluid of shoe cream room 20.5 pressure of cavity of resorption increases that cavity of resorption 5 and shoe cream room 20 is made to form pressure difference, in the work of pressure difference
It is contacted on valve seat 21 with lower damping fluid extruding pad 23, and then prevents damping fluid from recirculation hole 24 closing of recirculation hole 24
Flow into shoe cream room 20.Slide bar 22 is arranged with sealing ring 27 close to one end of gasket 23, and the internal diameter of sealing ring 27 is greater than recirculation hole 24,
Its outer diameter is less than the outer diameter of gasket 23.Reduce the gap between gasket 23 and valve seat 21 using sealing ring 27, further promotes bottom
The leakproofness of valve 15.
As shown in figure 5, slide bar 22 offers runner 28,28 lower ending opening of runner is opened in 22 lower end surface of slide bar, runner 28
Upper end opening be opened in one end side wall of the slide bar 22 close to gasket 23.When shock absorber, damping fluid open bottom valve 15 from
Shoe cream room 20 enters in cavity of resorption 5, and slide bar 22 is slided to 23 direction of gasket at this time, opens up runner 28 and opening on 22 side wall of slide bar
Mouthful it is located in cavity of resorption 5, cavity of resorption 5 is connected to shoe cream room 20 using runner 28, damping fluid is further facilitated and enters cavity of resorption 5, it can be with
By controlling the size of 28 sectional area of runner to control the speed that shoe cream room 20 enters cavity of resorption 5, also can control when damper is drawn
The size of damping force when stretching.
As shown in figure 5, bottom valve 15 contacts at 13 lower end surface inner wall of oil storage cylinder far from one end of piston 2, it is using valve seat 21
Piston cylinder 1 and oil storage cylinder 13 provide axial support force, and piston cylinder 1 and oil storage cylinder 13 is prevented to be compressed axially between the two, and limitation is lived
Axial distance between plug cylinder 1 and oil storage cylinder 13, to prevent the impact between piston cylinder 1 and oil storage cylinder 13, protection is lived
Plug cylinder 1 and oil storage cylinder 13.In order to enter damping liquid stream in shoe cream room 20 inside bottom valve 15, in valve seat 21 close to the side wall week of lower end
To several intercommunicating pores 29 are offered, intercommunicating pore 29 is connected to 15 inside of bottom valve and shoe cream room 20.
As shown in figure 4, oil storage cylinder 13 includes the second cylinder body 30 of upper end opening and the oil sealing of closing the second cylinder body 30 opening
Lid 31.When assembling oil storage cylinder 13 and piston cylinder 1, piston cylinder 1 is inserted into from the opening of oil storage cylinder 13, then utilizes oil seal cover 31
The opening for closing oil storage cylinder 13, facilitates the assembly of oil storage cylinder 13 and piston cylinder 1.Oil seal cover 31 has been fixedly and coaxially connected oil sealing 32,
Oil sealing 32 is sheathed on piston rod 3, reduces the gap between piston rod 3 and oil storage cylinder 13 using oil sealing 32, reduces damping fluid from work
Gap location leakage between stopper rod 3 and oil storage cylinder 13.
As shown in figure 4, the inner wall of oil sealing 32 can be with piston rod 3 in order to guarantee leakproofness between oil sealing 32 and piston rod 3
Outer wall fits closely, larger so as to cause frictional force between the two, and when piston rod 3 slides, oil sealing 32 rubs therebetween
It is moved under the action of wiping power, and then influences the leakproofness of oil storage cylinder 13.Piston rod 3 is arranged with second spring 33 and oil sheet
34,33 end of second spring contacts on guide pad 16, and 33 upper end of second spring contacts at oil sheet 34.Oil sheet 34 is
It is contacted on oil sealing 32 under the elastic force effect of two springs 33, holds out against oil sealing 32 using second spring 33, when preventing damper from shrinking,
Oil sealing 32 slips away under the drive of piston rod 3 from the second cylinder body 30, keeps oil sealing 32 and the connection structure of the second cylinder body 30 more steady
It is fixed.
As shown in Figure 1,3 upper end of piston rod is fixedly connected with dust cover 35, dust is reduced using dust cover 35 and is adhered to work
On stopper rod 3, dust is avoided to increase the frictional force between piston rod 3 and oil seal cover 31.35 end face of dust cover has been fixedly and coaxially connected
The limited block 36 of annular.When limited block 36 contacts at 31 upper surface of oil seal cover, there are spacing with bottom valve 15 for piston 2.Work as damping
When device is contracted to extreme position, limited block 36 contacts at 31 upper surface of oil seal cover.Using dust cover 35 to the contraction row of damper
A possibility that Cheng Jinhang limit prevents piston 2 and 1 end face inner wall of piston cylinder from impacting, reduces 2 deformation of piston and damage, is reduced out
Now the case where sliding between 1 inner wall of piston 2 and piston cylinder is influenced because of 2 deformation of piston or damage.
As shown in Figure 1,31 upper surface of oil seal cover has been fixedly and coaxially connected rubber ring 37, the diameter and limited block of rubber ring 37
36 diameters are identical.The impact of dust cover 35 and 31 end face of oil seal cover is buffered using rubber ring 37, protects dust cover 35 and oil seal cover
31.3 upper end of piston rod is fixedly connected with upper lift ring 38, and 13 lower end of oil storage cylinder is fixedly connected with lower lift ring 39, utilizes upper lift ring 38
It is installed with the more convenient damper of lower lift ring 39.
Specific working mode: when damper compression, 2 slide downward of piston, so that 5 volume of cavity of resorption be made to reduce and epicoele 4
Volume increase, and then increase pressure in cavity of resorption 5 and the pressure in epicoele 4 reduces, form pressure between cavity of resorption 5 and cavity of resorption 5
Difference.Damping fluid in cavity of resorption 5, to enter at 9 lower ending opening of the second oil-through-hole, then opens piston 2 under the action of pressure difference
The valve block 12 of upper end is connected to the second oil-through-hole 9, so that damping fluid flows into epicoele 4 from the second oil-through-hole 9.Because epicoele 4 increases
Volume be less than the reduced volume of cavity of resorption 5, clearance flow between extra damping fluid is between pilot hole 17 and piston rod 3 in epicoele 4
Enter shoe cream room 20, to avoid 1 detonation of piston cylinder.When damper is compressed to the limit, limited block 36 is contacted on oil seal cover 31
End face prevents piston 2 and 1 end face inner wall of piston cylinder from impacting.
When shock absorber, piston 2 is moved up, so that 4 volume of epicoele reduces and the increase of the volume of cavity of resorption 5, in turn
Increase pressure in epicoele 4 and the pressure reduction in cavity of resorption 5, forms pressure difference between epicoele 4 and cavity of resorption 5.Damping in epicoele 4
Liquid opens valve block 12 from the first oil-through-hole 8 under pressure difference effect and enters in cavity of resorption 5.Damping fluid in shoe cream room 20 passes through bottom valve
15 enter in cavity of resorption 5 to supplement the damping fluid that piston cylinder 1 lacks.
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability
Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but
As long as all by the protection of Patent Law in the scope of the claims of the utility model.
Claims (10)
1. a kind of hydraulic damper of anti-detonation, including piston cylinder (1) and oil storage cylinder (13), the piston cylinder (1) are placed in oil storage
In cylinder (13), shoe cream room (20) are formed between piston cylinder (1) outer wall and oil storage cylinder (13) inner wall, in the piston cylinder (1)
It has been in axial sliding connection piston (2), it is in epicoele (4) and cavity of resorption (5), institute that the piston (2), which separates piston cylinder (1) inner space,
It states piston (2) end face and circumferentially runs through and offer through-hole, it is characterized in that: the piston cylinder (1) one end is equipped with bottom valve (15), the bottom
Valve (15) is check valve and its conducting direction is that shoe cream room (20) flows to cavity of resorption (5), and the piston (2) has been fixedly and coaxially connected
Piston rod (3), the piston rod (3) far from bottom valve (15) one end to extending and pass through piston cylinder (1) and oil storage cylinder (13)
End face extends to oil storage cylinder (13) outside, and the piston cylinder (1) offers the pilot hole (17) passed through for piston rod (3), described to lead
To hole (17) and piston rod (3) clearance fit.
2. the hydraulic damper of a kind of anti-detonation according to claim 1, it is characterized in that: the bottom valve (15) includes fixing
Be connected to the valve seat (21) of piston cylinder (1), be in axial sliding connection in valve seat (21) slide bar (22) and be fixedly connected on slide bar
(22) close to the gasket (23) of piston (2) one end, the slide bar (22) is arranged with the first of gasket (23) conflict valve seat (21)
Spring (26), the valve seat (21) offer the recirculation hole (24) that the confession slide bar (22) passes through, the recirculation hole (24) and cunning
Bar (22) clearance fit.
3. the hydraulic damper of a kind of anti-detonation according to claim 2, it is characterized in that: the slide bar (22) is close to gasket
(23) one end is arranged with the sealing ring (27) of opening and closing recirculation hole (24).
4. the hydraulic damper of a kind of anti-detonation according to claim 2, it is characterized in that: the stream that the slide bar (22) opens up
Road (28), the runner (28) is open at one end to be opened in the end face of slide bar (22) far from gasket (23), the runner (28) it is another
It is open at one end to be opened in one end side wall of slide bar (22) close to gasket (23).
5. the hydraulic damper of a kind of anti-detonation according to claim 2, it is characterized in that: the valve seat (21) is far from piston
(2) one end contacts at oil storage cylinder (13) end face inner wall, and valve seat (21) side wall offers intercommunicating pore (29), the intercommunicating pore
(29) connection valve seat (21) inside and shoe cream room (20).
6. the hydraulic damper of a kind of anti-detonation according to claim 1, it is characterized in that: the piston cylinder (1) includes one
The guide pad (16) of the first cylinder body (14) and closed piston cylinder (1) opening of end opening, the pilot hole (17) are opened in guiding
Block (16).
7. the hydraulic damper of a kind of anti-detonation according to claim 6, it is characterized in that: the oil storage cylinder (13) includes one
The second cylinder body (30) of end opening and the oil seal cover (31) of closing the second cylinder body (30) opening, the oil seal cover (31) are fixedly connected
Have oil sealing (32), the oil sealing (32) is sheathed on piston rod (3).
8. the hydraulic damper of a kind of anti-detonation according to claim 7, it is characterized in that: the piston rod (3) is arranged with
The second spring (33) that oil sealing (32) is held out against, described second spring (33) one end contact at guide pad (16).
9. the hydraulic damper of a kind of anti-detonation according to claim 8, it is characterized in that: the piston rod (3) is arranged with
Oil sheet (34), described oil sheet (34) one end are bonded with oil sealing (32), and the oil sheet (34) is far from oil sealing (32)
One end contradict second spring (33) far from guide pad (16) one end.
10. the hydraulic damper of a kind of anti-detonation according to claim 7, it is characterized in that: the guide pad (16) is close
The end face of first cylinder body (14) opens up installation annular groove (18), and first cylinder body (14) is placed in close to the one end of guide pad (16)
It installs in annular groove (18), side wall and oil storage cylinder (13) inner wall of the guide pad (16) fit closely, guide pad (16) side
Wall circumferentially opens up several oil-recovery tanks (19), the oil-recovery tank (19) by between guide pad (16) and oil seal cover (31) space and storage
Oil pocket (20) connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821445373.XU CN208686864U (en) | 2018-09-04 | 2018-09-04 | A kind of hydraulic damper of anti-detonation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821445373.XU CN208686864U (en) | 2018-09-04 | 2018-09-04 | A kind of hydraulic damper of anti-detonation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208686864U true CN208686864U (en) | 2019-04-02 |
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ID=65888453
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821445373.XU Expired - Fee Related CN208686864U (en) | 2018-09-04 | 2018-09-04 | A kind of hydraulic damper of anti-detonation |
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| Country | Link |
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| CN (1) | CN208686864U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110258592A (en) * | 2019-06-21 | 2019-09-20 | 重庆科技学院 | Adaptive pressure release type damping landslide protective device |
| CN115053720A (en) * | 2022-07-04 | 2022-09-16 | 厦门千日红园艺有限公司 | Detachable water-saving bougainvillea spectabilis matrix potting device |
-
2018
- 2018-09-04 CN CN201821445373.XU patent/CN208686864U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110258592A (en) * | 2019-06-21 | 2019-09-20 | 重庆科技学院 | Adaptive pressure release type damping landslide protective device |
| CN115053720A (en) * | 2022-07-04 | 2022-09-16 | 厦门千日红园艺有限公司 | Detachable water-saving bougainvillea spectabilis matrix potting device |
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