CN209414490U - A kind of external piezoelectric ceramics variable-damp vibration damper - Google Patents
A kind of external piezoelectric ceramics variable-damp vibration damper Download PDFInfo
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- CN209414490U CN209414490U CN201821714494.XU CN201821714494U CN209414490U CN 209414490 U CN209414490 U CN 209414490U CN 201821714494 U CN201821714494 U CN 201821714494U CN 209414490 U CN209414490 U CN 209414490U
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Abstract
The utility model discloses a kind of external piezoelectric ceramics variable-damp vibration dampers, including damper outer cylinder, cylinder and damper inner cylinder in damper, absorber rod is inserted into damper inner cavity after passing through damper sealing cover, the lower end of absorber rod is fixed with one-way piston valve, guide and limit card is equipped with positioned at the top of one-way piston valve on absorber rod, one-way bottom valve crimps sealing with cylinder in damper inner cylinder and damper, piezoelectric ceramics orifice valve is provided with outside damper outer cylinder, orifice valve connecting bridge snap ring is provided in damper on cylinder, the inside of piezoelectric ceramics orifice valve is connected by orifice valve connecting bridge with orifice valve connecting bridge snap ring, orifice valve connecting bridge is equipped with the connecting bridge overflow hole being connected with damper exocoel.The piezoelectric element that piezoelectric ceramics orifice valve uses multi-disc piezoelectric ceramics to be stacked is performer.A kind of external piezoelectric ceramics variable-damp vibration damper of the utility model, it is electrically controllable, have fast response time, variable damping ratio is big and at low cost, high reliablity, is not influenced advantage by special material technique.
Description
Technical field
The utility model relates to a kind of external piezoelectric ceramics variable-damp vibration dampers, belong to vehicles adaptive damping and subtract
Shake device field.
Background technique
The existing vehicles have following several dampers: the first, can not variable damping damper, cannot preferably it is simultaneous
Comfort and handling is cared for, damping small damper comfort can get well, but manipulation can be deteriorated, and the angle of heel of zig zag is bigger than normal,
The pitch angle of start and stop is also bigger than normal, makes one to feel uncomfortable, drives lack confidence.Damp big damper inclination become smaller, pitch angle
Become smaller, but comfort is deteriorated, impact sense is strong.It can be seen that the adaptive damping of damping can be adjusted either manually or automatically
Damper, which becomes, solves one of comfort and handling means.
Second, using the electromagnetic type variable-damp vibration damper of inductance coil, such general electric current of electromagnetic type is bigger than normal,
Calorific value is big, and because the presence of electromagnetic valve coil inductance limits the peak response speed of solenoid valve class variable-damp vibration damper
Degree.Smaller compared with the damping ratio (maximum damping is with the ratio of minimum damping) of solenoid valve class variable-damp vibration damper, damper can
Variable damping variation range is smaller, and comfort and handling subjective sensation are unobvious.
The third, magnetic rheology type variable-damp vibration damper, the type damper fast response time, and maximum damping and minimum
Damping ratio can be made greatly, be more satisfactory variable-damp vibration damper.But it because magnetorheological fluid may generate sedimentation, makes
At the change of the non-controllable property of damping value, or even the damage of damper is caused, solves such settlement issues in industry again always；Separately
Outside, the nano particle in magnetorheological fluid there are certain requirements production technology and production environment, and price is opposite at this stage for magnetorheological fluid
Higher, the magnetorheological fluid materials of high quality are also relying on import.
Utility model content
The technical problems to be solved in the utility model is to overcome the deficiencies of existing technologies, and provides a kind of electrically controllable, has sound
Answer speed fast, variable damping ratio is big and at low cost, high reliablity, is not made pottery by the external piezoelectricity that special material technique is influenced advantage
Porcelain variable-damp vibration damper.
In order to solve the above technical problems, the technical solution adopted by the utility model is:
A kind of external piezoelectric ceramics variable-damp vibration damper, including outside the damper that is set gradually from outer ring to inner ring
Cylinder, cylinder and damper inner cylinder in damper form damper exocoel between cylinder in the damper outer cylinder and damper, described to subtract
It shakes and forms damper lumen in device between cylinder and damper inner cylinder, be damper inner cavity in the damper inner cylinder, damper is close
It covers and is crimped with the upper end sealing of cylinder in the damper outer cylinder and damper, in the damper sealing cover and the damper
Overflow hole is provided at cylinder upper end crimping, absorber rod is inserted into the damper inner cavity, institute after passing through the damper sealing cover
The lower end for stating absorber rod is fixed with one-way piston valve, and the top that the one-way piston valve is located on the absorber rod, which is equipped with, leads
To limiting card, the damper sealing cover and damper inner cylinder junction are fixed with limit spring, and the absorber rod is worn
The limit spring is crossed, one-way bottom valve crimps sealing, the one-way bottom valve lower section with cylinder in the shake device inner cylinder and damper is subtracted
It is provided with damper bottom cover, the damper bottom cover is connected with damper outer tube inner wall sealing, outside the damper outer cylinder
Portion is provided with piezoelectric ceramics orifice valve, is provided with orifice valve connecting bridge snap ring, the piezoelectric ceramics resistance in the damper on cylinder
The inside of Buddhist nun's valve is connected by orifice valve connecting bridge with the orifice valve connecting bridge snap ring, and the orifice valve connecting bridge is equipped with
The connecting bridge overflow hole being connected with the damper exocoel.
The one-way piston valve includes the first check valve sheet and piston body, and the check valve sheet is used to open or closes institute
The overflow hole on piston body is stated, the upper and lower side of the absorber rod is provided with the portion of being screwed, and the screw thread positioned at lower end is solid
Determine portion to be fixed after the check valve sheet and piston body with fixture nut.
The one-way bottom valve includes bottom valve valve body and second one-way valve piece, is provided with bottom valve overflow on the bottom valve valve body
Hole, the second one-way valve piece are used to open or close the bottom valve overflow hole, and bottom valve valve body lower end is provided with to be subtracted with described
The bottom valve valve body of device bottom cover upper surface contact is shaken, one-way safety valve block is connected with below the bottom valve valve body, fastening screw passes through institute
It is fixed after stating one-way safety valve block, bottom valve valve body and second one-way valve piece with fastening nut.
The piezoelectric ceramics orifice valve includes piezoelectric ceramics valve shell, and the piezoelectric ceramics valve shell and piezoelectric ceramics protect
Shell is tightly connected, and piezoelectric element is provided in the piezoelectric ceramics guard shield, the piezoelectric element is using more
Piece piezoelectric ceramics is stacked, and the piezoelectric ceramics orifice valve is using piezoelectric element as performer, the piezoelectricity
Ceramics stack one end and are connected with the piezoelectric ceramics guard shield, and draw piezoelectric ceramics control line, and the other end and piezoelectricity are made pottery
Porcelain spool is connected, and slide valve valve body is provided in the piezoelectric ceramics valve shell, and the slide valve valve body is equipped with for installing
The spool mounting hole of piezoelectric ceramics spool is stated, the piezoelectric ceramics valve core inside is equipped with spool overflow hole, the spool mounting hole
In be equipped with flow control hole, piezoelectric ceramics spool reset spring is equipped in the flow control hole, the piezoelectric ceramics spool is multiple
The upper end of position spring is connected with the lower end of the piezoelectric ceramics spool, the flow on the flow control hole and the slide valve valve body
It controls overflow hole to be connected, the slide valve valve body is equipped with the dynamic core mounting hole for moving core for installing slide valve, the dynamic core mounting hole
In be equipped with slide valve reset spring, the flow control overflow hole is located at the dynamic core mounting hole bottom, in the dynamic core mounting hole
Equipped with valve body overflow hole, the slide valve moves core and is sealed in the dynamic core mounting hole by the crimping of slide valve top cover, the slide valve top
Lid is compressed with the orifice valve connecting bridge and is connected.
It is provided with the fixation of piezoelectric ceramics shell on the piezoelectric ceramics guard shield to emit, the piezoelectric ceramics shell fixation emits
It is bonded with the bending part on the piezoelectric ceramics valve shell, the piezoelectric ceramics guard shield is pressed abd fixed on the piezoelectricity and is made pottery
On porcelain valve shell.
Connected between the piezoelectric ceramics guard shield and the piezoelectric ceramics valve shell by the sealing of shell O-ring seal
It connects.
The slide valve valve body is connect by preloading spring with piezoelectric ceramic valve valve deck, the piezoelectric ceramic valve valve deck with it is described
Piezoelectric ceramics valve shell is fastened and connected.
It is tightly connected between the orifice valve connecting bridge and orifice valve connecting bridge snap ring by connecting bridge O-ring seal.
It is tightly connected between the piezoelectric ceramics valve shell and the slide valve valve body by slide valve valve body O-ring.
The slide valve valve body and slide valve are aroused in interest for copper material.
The utility model has the beneficial effects that
1, with it is existing can not be compared with damping changing impact damper, the damping that the utility model realizes damper is variable, and is
Continuous variable.
2, existing electromagnetic type variable-damp vibration damper is current-control type, and the utility model is that voltage-controlled type can variable resistance
Buddhist nun.The voltage of electric vehicle is higher in 36V or more now, therefore is easier to realize the control of damping compared with traditional fuel vehicle
System.
3, compared with magnetorheological fluid shock absorber, structure is relatively traditional, and implementation method is easier, produce and process cost and
Complex process degree is all lower.
4, being used cooperatively with real-time damped control system can be achieved real-time damper damping control, easy to accomplish comfortable
Property and manipulation take into account.
Detailed description of the invention
Fig. 1 is a kind of general structure schematic diagram of external piezoelectric ceramics variable-damp vibration damper of the utility model；
Fig. 2 is the structural schematic diagram of one-way piston valve in the utility model；
Fig. 3 is the structural schematic diagram of one-way bottom valve in the utility model；
Fig. 4 is the structural schematic diagram of piezoelectric ceramics orifice valve in the utility model.
Appended drawing reference is as follows in figure: 1 for be screwed portion, 2 be absorber rod, 3 be damper sealing cover, 4 be limit bullet
Spring, 5 be damper outer cylinder, 6 be damper inner cylinder, 7 be damper inner cavity, 8 be damper lumen, 9 be cylinder in damper, 10 be
Damper exocoel, 11 be one-way piston valve, 12 be guide and limit card, 13 be orifice valve connecting bridge snap ring, 14 be piezoelectric ceramics resistance
Buddhist nun's valve, 15 be liquid flow through-hole, 16 be orifice valve connecting bridge, 17 be connecting bridge O-ring, 18 be one-way bottom valve, 19 be damper
Bottom cover, 11-1 are the first check valve sheet, 11-2 is piston body, 11-3 is fixture nut, 14-1 is piezoelectric ceramics control line, 14-2
It is piezoelectric element for piezoelectric ceramics guard shield, 14-3,14-4 is shell O-ring seal, 14-5 is piezoelectric ceramics shell
Locking cap, 14-6 are piezoelectric ceramics shell overflow hole, 14-7 is slide valve valve body O-ring seal, 14-8 is valve body overflow hole, 14-9
For valve body overflow hole slide valve top cover, 14-10 be piezoelectric ceramic valve valve deck, 14-11 is that slide valve is aroused in interest, 14-12 is piezoelectric ceramic valve
Core, 14-13 are the aroused in interest overflow hole of slide valve, 14-14 is spool overflow hole, 14-15 is flow control hole, 14-16 be preloading spring,
14-17 is flow control overflow hole, 14-18 is ceramic cartridge reset spring, 14-19 is slide valve valve body, 14-20 is piezoelectric ceramics
Valve shell, 14-21 are slide valve reset spring, 16-1 is connecting bridge overflow hole, 18-1 is fastening screw, 18-2 be fastening nut,
18-3 is second one-way valve piece, 18-4 is bottom valve overflow hole, 18-5 is the support of valve bottom, 18-6 is one-way safety valve block, 18-7 is
Bottom valve valve body.
Specific embodiment
The utility model is further described with reference to the accompanying drawing, following embodiment is only used for clearly illustrating this
The technical solution of utility model, and cannot be used as a limitation the limitation protection scope of the utility model.
As shown in Figure 1, external piezoelectric ceramics variable-damp vibration damper is by the portion of being screwed 1, absorber rod 2, damper
Sealing cover 3, limit spring 4, damper outer cylinder 5, damper inner cylinder 6, damper inner cavity 7, damper lumen 8, cylinder in damper
9, damper exocoel 10, one-way piston valve 11, guide and limit card 12, orifice valve connecting bridge snap ring 13, piezoelectric ceramics orifice valve 14,
Liquid flow through-hole 15, orifice valve connecting bridge 16, connecting bridge O-ring 17, one-way bottom valve 18, damper bottom cover 19 form.
The damper outer cylinder 5 from outer ring to inner ring, cylinder 9 and damper inner cylinder 6 in damper are equipped with inside damper.Damping
Device sealing cover 3, damper outer cylinder 5, damper inner cylinder 6, cylinder 9 and one-way bottom valve 18 and damper bottom cover 19 composition in damper
3 cavitys.Damper exocoel 10 is formed in damper outer cylinder 5 and damper between cylinder 9, in damper in cylinder 9 and damper
Damper lumen 8 is formed between cylinder 6, is damper inner cavity 7 in damper inner cylinder 6.
One-way piston valve 11 is fixed on being screwed in portion 1 of 2 lower end of absorber rod, and one-way piston valve 11 is done in the lumen
It moves up and down, 11 the permissions liquid one-way flows of one-way piston valve, only permission liquid unidirectionally circulates upwards in Fig. 1.Absorber rod 2
The upper top positioned at one-way piston valve 11 is equipped with guide and limit card 12, which subtracts for protecting damper living while can limit
Shake device maximum tension stroke.Absorber rod 2 passes through damper sealing cover 3, and is sealing with damper sealing cover 3.Damper
Bar 2 is equipped with the position 1 that is screwed being fixedly connected with the vehicle.
The crimping position of damper sealing cover 3 and damper inner cylinder 6 is equipped with overflow hole, can guarantee in damper inner cavity 7
Liquid flow in damper lumen 8.Damper sealing cover 3 is crimped with the sealing of damper outer cylinder 5；Damper sealing cover 3 with subtract
Shake the sealing of cylinder 9 crimping in device；Limit spring 4 is fixed on damper sealing cover 3 and 6 junction of damper inner cylinder.
18 normal operating conditions of one-way bottom valve only allows liquid one-way flow, only allows liquid unidirectionally to upstream in diagram
It is logical.One-way bottom valve 18 crimps sealing with damper inner cylinder 6, and one-way bottom valve 18 crimps sealing with cylinder 9 in damper.Damper exocoel
Liquid in 10 can only flow to damper inner cavity 7 by one-way bottom valve 18.Damper bottom cover 19 is welded on damper outer cylinder 5,
Damper bottom cover 19 and one-way bottom valve 18, which compress, to be connected.
The shell sealing welding of piezoelectric ceramics orifice valve 14 is on damper outer cylinder 5, the inside of piezoelectric ceramics orifice valve 14
It is connected by orifice valve connecting bridge 16 with cylinder 9 in damper.Orifice valve connecting bridge 16 passes through connecting bridge O-ring seal 17 and subtracts
The orifice valve connecting bridge snap ring 13 in device on cylinder is shaken to be tightly connected；Orifice valve connecting bridge 16 is equipped with connecting bridge overflow hole 16-1,
Connecting bridge overflow hole 16-1 is connected with damper exocoel 10.Orifice valve connecting bridge 16 and damper outer cylinder 5, which compress, to be connected.
The utility model structure realize no matter absorber rod 2 movement can make inside damper up or down
The unidirectional inflow piezoelectric ceramics orifice valve 14 of oil liquid, is then flowed into outside damper by the overflow sky in orifice valve connecting bridge 16
In chamber 10
Wherein, one-way piston valve 11 specific structure as shown in Fig. 2, its by check valve sheet 11-1, with the work of overflow hole
Cock body 11-2 is fixed on being screwed in portion 1 of 2 lower end of absorber rod by fixture nut 11-3.When piston body 11-2 is transported downwards
When row, due to the effect of pressure, liquid can be moved upwards by the overflow hole on piston body 11-2, and push check valve sheet 11- open
1, overflow hole is opened, and liquid flows to upper piston area.When piston body 11-2 is run up, since the pressure effect of liquid can make list
It is pressed on piston body 11-2 to valve block 11-1, overflow bore closure, liquid cannot be passed to the lower part of piston.
Wherein, the specific structure is shown in FIG. 3 for one-way bottom valve 18, by check valve sheet 18-3 and one-way safety valve block 18-
6 are fixed on bottom valve valve body 18-7 by fastening screw 18-1 and fastening nut 18-2 and form.Bottom valve valve body 18-7 is equipped with bottom
Valve overflow hole 18-4 and valve bottom support 18-5.Bottom valve overflow hole 18-4 is used for the circulation of liquid；One-way safety valve block 18-6 is normal
Under the conditions of do not work, opened when damper chamber pressure is excessive, the oil liquid of inner cavity be directly over one-way bottom valve 18 reach damping
In device exocoel 10, in order to avoid damage damper；Valve bottom support 18-5 makes liquid by enough spaces for resisting damper bottom cover 19
Circulation.
As shown in figure 4, piezoelectric ceramics orifice valve 14 by piezoelectric ceramics control line 14-1, piezoelectric ceramics guard shield 14-2,
Piezoelectric element 14-3, shell O-ring seal 14-4, piezoelectric ceramics shell locking cap 14-5, piezoelectric ceramics shell overflow hole
14-6, slide valve valve body O-ring seal 14-7, valve body overflow hole 14-8 slide valve top cover 14-9, piezoelectric ceramic valve valve deck 14-10, cunning
Valve actuation heart 14-11, piezoelectric ceramics spool 14-12, the aroused in interest overflow hole 14-13 of slide valve, spool overflow hole 14-14, flow control hole
14-15, preloading spring 14-16, flow control overflow hole 14-17, piezoelectric ceramics spool reset spring 14-18, slide valve valve body 14-
19, piezoelectric ceramics valve shell 14-20, slide valve reset spring 14-21 are formed.Wherein, the slide valve valve body 14-19 and aroused in interest 14- of slide valve
11 be copper material, and slide valve top cover 14-9 is stainless steel material.
Wherein, piezoelectric element 14-3 is located in piezoelectric ceramics guard shield 14-2, the one end piezoelectric element 14-3
It is connect with piezoelectric ceramics guard shield 14-2, and draws piezoelectric ceramics control line 14-1, other end and piezoelectric ceramics spool 14-
12 are connected.
Wherein piezoelectric ceramics guard shield 14-2 is close by shell O-ring seal 14-4 and piezoelectric ceramics valve shell 14-20
Envelope connection, the fixation of piezoelectric ceramics shell emit 14-5 and piezoelectric ceramics guard shield 14-2 are pressed abd fixed on piezoelectric ceramics valve shell
On 14-20.
Wherein piezoelectric ceramics valve shell 14-20 is connected with slide valve valve body 14-19 by slide valve valve body O-ring 14-7, sliding
Valve body 14-19 is equipped with the spool mounting hole for installing piezoelectric ceramics spool 14-12, the valve of piezoelectric ceramics spool 14-12
It is equipped with flow control hole 14-15 in core mounting hole, is equipped with piezoelectric ceramics spool reset spring 14-18 in flow control hole 14-15,
It is connected with the top of piezoelectric ceramics spool 14-12.Flow control overflow on flow control hole 14-15 and slide valve valve body 14-19
Hole 14-17 is connected.
Wherein slide valve valve body 14-19 is equipped with the dynamic core mounting hole that core 14-11 is moved for installing slide valve, and slide valve moves core 14-
Slide valve reset spring 14-21 is equipped in 11 dynamic core mounting hole, the bottom that slide valve moves the dynamic core mounting hole of core 14-11 is equipped with flow
Control overflow hole 14-17.Slide valve, which moves, is equipped with valve body overflow hole 14-8 in the dynamic core mounting hole of core 14-11.It is logical that slide valve moves core 14-11
Slide valve top cover 14-9 crimping is crossed to be sealed in the dynamic core mounting hole of the dynamic core 14-11 of slide valve, it is aroused in interest in slide valve top cover 14-9 and slide valve
Empty avoiding processing is done in the contact area of 14-11.
Wherein slide valve valve body 14-19 is connect by preloading spring 14-16 with piezoelectric ceramic valve valve deck 14-10, piezoelectric ceramics
Valve valve deck 14-10 is fastened and connected with piezoelectric ceramics valve shell 14-2.
Wherein slide valve top cover 14-9 and orifice valve connecting bridge 16, which compress, connects.
The utility model uses piezoelectric ceramics and originally sets as performer in order to increase the execution distance of piezoelectric ceramics
Meter uses piezoelectric element 14-3, and piezoelectric ceramics, which stacks 14-3, can increase piezoelectric ceramic performer piezoelectric ceramics spool
The distance of the output of 14-12.Piezoelectric ceramics pushes a spool, and the big of flow is controlled by spool and the sectional area of aperture
It is small, by changing the sectional area relationship of spool and aperture, different flow controlling curve can be achieved in the case where pressure is certain.Pressure
The voltage of electroceramics orifice valve 14 could correctly control the damping of piezoelectric ceramics damper only in reasonable range.It is pressing
Electroceramics stacks in the cold situation of 14-3, and piezoelectric element 14-3 is at elongation state, the work of piezoelectric ceramics spool 14-12
The circulation area for making face and flow control hole 14-15 composition is minimum, and flow is minimum, and the damping of piezoelectric ceramics damper is maximum.?
In the case that piezoelectric element 14-3 power-on voltage is excessive, piezoelectric ceramics spool 14-12 is mobile away from maximum, at this time piezoelectric ceramics
Flow control overflow hole 14-17 is closed in the working end of spool 14-12, and flow is minimum, and the damping of piezoelectric ceramics damper is maximum.
The one-way flow principle of the damper of the utility model is as follows:
Due to the presence of piston-rod volume, same distance is moved, the lower part oil liquid variation on the top and piston of piston
Volume be it is different, the volume of piston lower portion liquid separation body variation is greater than the volume of upper piston area point variation.
When piston rod 2 moves downward, one-way bottom valve 18 is closed, and one-way piston valve 11 is opened, and liquid is by one-way piston valve
11 lower part flows to the top of one-way piston valve 11 through the overflow hole of one-way piston valve 11, since the volume change of top and the bottom is different
Sample, the volume for flowing to top will be filled into the volume that top is available, but due to the space on the top of damper inner cavity 7 by
Oil liquid is full of, therefore extra liquid can be flowed into from the overflow hole on the damper sealing cover 3 for being located at 7 top of damper inner cavity
In damper lumen 8, and since damper lumen 8 has been also filled with liquid, liquid is again since the effect of pressure can pass through
Liquid flow through-hole 15 in damper on cylinder 9 is flowed into piezoelectric ceramics orifice valve through orifice valve connecting bridge 16.Liquid is damping
The orifice valve connecting bridge overflow hole 16-1 being arranged in orifice valve connecting bridge 16 can be passed through in valve connecting bridge 16 after flow control
It is flowed into damper exocoel 10.
When piston rod 2 moves upwards, one-way bottom valve 18 is opened, and one-way piston valve 11 is closed, 11 top of one-way piston valve
Liquid can from be located at 7 top of damper inner cavity damper sealing cover 3 on overflow hole be flowed into damper lumen 8,
Since the volume that liquid changes above and below piston is different, the volume of the variation of 11 lower part of one-way piston valve, which is greater than, to be flowed into damper
Volume in chamber 8 needs additional liquid to fill up the volume of piston lower portion, and the liquid in damper exocoel 10 will pass through list
It is drawn into damper inner cavity 7 to bottom valve 18.Into the liquid flow direction in damper lumen 8 with working principle with upper piston
Bar 2 is the same when moving downward.
The working principle of the utility model piezoelectric ceramic valve is as follows:
By the characteristic of piezoelectric ceramics it is found that piezoelectric ceramics can generate deformation when adding voltage at piezoelectric ceramics both ends, produce
The size of raw deformation is directly proportional to institute's making alive, i.e. the size of deformation is by voltage-controlled.
A kind of valve body executing agency can be designed according to the characteristic of piezoelectric ceramics, is controlled by piezoelectric ceramic actuator structure
The switch of valve body or the size of valve body openings.By designing the characteristic in valve body execution unit section, not cocurrent flow can be designed that
The piezoelectric ceramic valve of flow characteristic.
As shown in figure 4, piezoelectric element 14-3 is located in piezoelectric ceramics guard shield 14-2, piezoelectric element 14-3
It is arranged in parallel with damper outer cylinder 5.When controlling voltage swing variation, piezoelectric element 14-3 can be in the longitudinal direction in diagram
Upper generation deformation, the piezoelectric ceramics spool 14-12 being connected with piezoelectric element 14-3 can generate longitudinal displacement, displacement
Size is related with the voltage swing being added on piezoelectric element 14-3.When piezoelectric ceramics spool 14-12 is moved up and down, can control
The size of flow control hole 14-15 flow area on slide valve valve body 14-19 processed realizes flow control valve or switch control
Valve.
The control principle of piezoelectric ceramic valve damper variable damping is as follows in the utility model:
The damping of hydraulic damper is related with the flow in the unit time, and flow is bigger in the unit time, damps smaller；It is single
Flow is smaller in the time of position, damps bigger.Therefore the size of damping can be controlled by controlling the size of flow.
As shown in Figure 4, when liquid enters piezoelectric ceramic valve by the liquid flow through-hole 15 in orifice valve connecting bridge 16
It can 14-11 generation pressure aroused in interest to slide valve behind 14 inside.
Liquid in the case that flow overflow hole 14-17 is opened, inside the aroused in interest 14-11 of slide valve and slide valve valve body 14-19
It can be flowed out through flow overflow hole 14-17, liquid can overcome the elastic force of slide valve reset spring 14-21 that the aroused in interest 14-11 of slide valve is pushed to move
Dynamic, valve body overflow hole 14-8 is opened, and liquid is entered through connecting bridge overflow hole 16-1 by cylinder 9 in damper and damper outer cylinder 5
In the damper exocoel 10 of composition；The liquid of flow control overflow hole 14-17 is flowed through through flow control hole 14-15 and piezoelectric ceramics
Shell overflow hole 14-6 outflow；
In the case that flow overflow hole 14-17 is closed, inside the aroused in interest 14-11 of slide valve and slide valve valve body 14-19
Liquid cannot compress so the aroused in interest 14-11 of slide valve is immovable, and valve body overflow hole 14-8 is closed, and liquid cannot flow into damper
In exocoel.
The switch of control flow control overflow hole 14-17 or the size of flow can control damping known to analyzing above
The flow of device internal liquid.It is analyzed by above-mentioned " piezoelectric ceramic valve working principle " it is found that by control piezoelectric element two
The flow that the voltage at end can control damper internal liquid can control the damping size of damper.
The above is only the preferred embodiment of the utility model, it should be pointed out that: for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the protection scope of the utility model.
Claims (10)
1. a kind of external piezoelectric ceramics variable-damp vibration damper, it is characterised in that: including what is set gradually from outer ring to inner ring
Cylinder (9) and damper inner cylinder (6) in damper outer cylinder (5), damper, in the damper outer cylinder (5) and damper cylinder (9) it
Between form damper exocoel (10), formation damper lumen (8), institute between cylinder (9) and damper inner cylinder (6) in the damper
It states in damper inner cylinder (6) as damper inner cavity (7), in damper sealing cover (3) and the damper outer cylinder (5) and damper
The upper end of cylinder (9) seals crimping, and the damper sealing cover (3) is provided with excessive with damper inner cylinder (6) the upper end place of crimping
Discharge orifice, absorber rod (2) pass through the damper sealing cover (3) and are inserted into the damper inner cavity (7), the absorber rod afterwards
(2) lower end is fixed with one-way piston valve (11), and the top on the absorber rod (2) positioned at the one-way piston valve (11) is set
Have guide and limit card (12), the damper sealing cover (3) and damper inner cylinder (6) junction are fixed with limit spring
(4), the absorber rod (2) passes through the limit spring (4), one-way bottom valve (18) and subtracts the shake device inner cylinder (6) and damping
Cylinder (9) crimping sealing in device, one-way bottom valve (18) lower section are provided with damper bottom cover (19), the damper bottom cover (19)
It is connected with damper outer cylinder (5) inner wall sealing, is provided with piezoelectric ceramics orifice valve outside the damper outer cylinder (5)
(14), be provided with orifice valve connecting bridge snap ring (13) in the damper on cylinder (9), the piezoelectric ceramics orifice valve (14) it is interior
Portion is connected by orifice valve connecting bridge (16) with the orifice valve connecting bridge snap ring (13), on the orifice valve connecting bridge (16)
Equipped with the connecting bridge overflow hole (16-1) being connected with the damper exocoel (10).
2. a kind of external piezoelectric ceramics variable-damp vibration damper according to claim 1, it is characterised in that: described unidirectional
Piston valve (11) include the first check valve sheet (11-1) and piston body (11-2), the check valve sheet (11-1) be used to open or
The overflow hole on the piston body (11-2) is closed, the upper and lower side of the absorber rod (2) is provided with the portion of being screwed (1), position
Be screwed described in the lower end portion (1) across the check valve sheet (11-1) and piston body (11-2) use fixture nut (11- afterwards
3) fixed.
3. a kind of external piezoelectric ceramics variable-damp vibration damper according to claim 1, it is characterised in that: described unidirectional
Bottom valve (18) includes bottom valve valve body (18-7) and second one-way valve piece (18-3), is provided with bottom valve on the bottom valve valve body (18-7)
Overflow hole (18-4), the second one-way valve piece (18-3) are used to open or close the bottom valve overflow hole (18-4), bottom valve
The lower end valve body (18-7) is provided with the bottom valve valve body (18-7) contacted with damper bottom cover (19) upper surface, the bottom valve
Be connected with one-way safety valve block (18-6) below body (18-7), fastening screw (18-1) pass through the one-way safety valve block (18-6),
Bottom valve valve body (18-7) and second one-way valve piece (18-3) are fixed with fastening nut (18-2) afterwards.
4. a kind of external piezoelectric ceramics variable-damp vibration damper according to claim 1, it is characterised in that: the piezoelectricity
Ceramic orifice valve (14) includes piezoelectric ceramics valve shell (14-20), and the piezoelectric ceramics valve shell (14-20) and piezoelectric ceramics are anti-
It protects shell (14-2) to be tightly connected, is provided with piezoelectric element (14-3), institute in the piezoelectric ceramics guard shield (14-2)
It states piezoelectric element (14-3) to be stacked using multi-disc piezoelectric ceramics, the piezoelectric ceramics orifice valve (14) uses piezoelectricity
Ceramics stack (14-3) as performer, described piezoelectric element one end (14-3) and the piezoelectric ceramics guard shield
(14-2) is connected, and draws piezoelectric ceramics control line (14-1), and the other end is connected with piezoelectric ceramics spool (14-12), institute
It states and is provided with slide valve valve body (14-19) in piezoelectric ceramics valve shell (14-20), the slide valve valve body (14-19) is equipped with and is used for
The spool mounting hole of the piezoelectric ceramics spool (14-12) is installed, the piezoelectric ceramics spool (14-12) is internal to be overflow equipped with spool
Discharge orifice (14-14) is equipped with flow control hole (14-15) in the spool mounting hole, is equipped in the flow control hole (14-15)
Piezoelectric ceramics spool reset spring (14-18), the upper end of the piezoelectric ceramics spool reset spring (14-18) and the piezoelectricity are made pottery
The lower end of porcelain spool (14-12) is connected, the flow control on the flow control hole (14-15) and the slide valve valve body (14-19)
Overflow hole (14-17) processed is connected, and the slide valve valve body (14-19) is equipped with the dynamic core peace that core (14-11) is moved for installing slide valve
Hole is filled, is equipped with slide valve reset spring (14-21) in the dynamic core mounting hole, the flow control overflow hole (14-17) is located at institute
Core mounting hole bottom is stated, is equipped with valve body overflow hole (14-8) in the dynamic core mounting hole, the slide valve moves core (14-11) and passes through
Slide valve top cover (14-9) crimping is sealed in the dynamic core mounting hole, the slide valve top cover (14-9) and the orifice valve connecting bridge
(16) connection is compressed.
5. a kind of external piezoelectric ceramics variable-damp vibration damper according to claim 4, it is characterised in that: the piezoelectricity
It is provided with the fixation of piezoelectric ceramics shell on ceramic protection shell (14-2) to emit (14-5), the piezoelectric ceramics shell fixation emits (14-
5) it is bonded with the bending part on the piezoelectric ceramics valve shell (14-20), the piezoelectric ceramics guard shield (14-2) is compressed
It is fixed on the piezoelectric ceramics valve shell (14-20).
6. a kind of external piezoelectric ceramics variable-damp vibration damper according to claim 4, it is characterised in that: the piezoelectricity
It is sealed between ceramic protection shell (14-2) and the piezoelectric ceramics valve shell (14-20) by shell O-ring seal (14-4)
Connection.
7. a kind of external piezoelectric ceramics variable-damp vibration damper according to claim 4, it is characterised in that: the slide valve
Valve body (14-19) is connect by preloading spring (14-16) with piezoelectric ceramic valve valve deck (14-10), the piezoelectric ceramic valve valve deck
(14-10) is fastened and connected with the piezoelectric ceramics valve shell (14-20).
8. a kind of external piezoelectric ceramics variable-damp vibration damper according to claim 1, it is characterised in that: the damping
It is tightly connected between valve connecting bridge (16) and orifice valve connecting bridge snap ring (13) by connecting bridge O-ring seal (17).
9. a kind of external piezoelectric ceramics variable-damp vibration damper according to claim 4, it is characterised in that: the piezoelectricity
It is tightly connected between ceramic valve shell (14-20) and the slide valve valve body (14-19) by slide valve valve body O-ring (14-7).
10. a kind of external piezoelectric ceramics variable-damp vibration damper according to claim 4, it is characterised in that: the pressure
Electroceramics stacks (14-3) and is arranged in parallel with the damper outer cylinder (5).
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109210126A (en) * | 2018-10-23 | 2019-01-15 | 清科智能悬架系统（苏州）有限公司 | A kind of external piezoelectric ceramics variable-damp vibration damper |
| CN109210126B (en) * | 2018-10-23 | 2024-10-25 | 清科智能悬架系统（苏州）有限公司 | External piezoelectric ceramic variable damping shock absorber |
-
2018
- 2018-10-23 CN CN201821714494.XU patent/CN209414490U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109210126A (en) * | 2018-10-23 | 2019-01-15 | 清科智能悬架系统（苏州）有限公司 | A kind of external piezoelectric ceramics variable-damp vibration damper |
| CN109210126B (en) * | 2018-10-23 | 2024-10-25 | 清科智能悬架系统（苏州）有限公司 | External piezoelectric ceramic variable damping shock absorber |
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Granted publication date: 20190920 Termination date: 20201023 |