CN206092779U - Large -scale hydraulic damper of symmetry formula - Google Patents
Large -scale hydraulic damper of symmetry formula Download PDFInfo
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- CN206092779U CN206092779U CN201620971384.6U CN201620971384U CN206092779U CN 206092779 U CN206092779 U CN 206092779U CN 201620971384 U CN201620971384 U CN 201620971384U CN 206092779 U CN206092779 U CN 206092779U
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Abstract
The utility model relates to a large -scale hydraulic damper of symmetry formula. It has solved current attenuator leakproofness subalternation problem. Including damping cylinder body, cylinder cap, two independent piston chamber, piston body and piston rods, the damping cylinder body is cylindricly, and the piston rod extends along the axial lead of damping cylinder body and set up, is equipped with a plurality of subsidiary hydro -cylinders in the circumference of damping cylinder body, and assists and be equipped with oil return reset structure in the oil pocket, is equipped with the built -in damping valves of a plurality of piston rod axis of lieing in core wire circumference outlyings in the circumference of damping cylinder body, and assist hydro -cylinder and built -in damping valves be the annular distribute set up in piston rod axis core wire circumference peripheral. The advantage lies in: adopt totally closed, holohedral symmetry, single piston rod, ring to put the march -past and assist hydro -cylinder, independent whole readily removable formula damping valves structure.
Description
Technical field
This utility model belongs to damping device technical field, more particularly, to a kind of symmetrical expression large hydraulic antivibrator.
Background technology
Antivibrator is that one kind is mainly used in carrying out vibration damping energy dissipating in space flight, aviation, building, bridge, railway, automobile and other industries
Device, which is mainly providing the resistance of motion, depletion kinergety.Typically be used in main equipment or nuclear energy field needs more
Large hydraulic antivibrator is adopted, but existing large hydraulic antivibrator has many deficiencies, for example, structure is not tight enough
Gather, need individually external auxiliary cylinder, closure is poor, and the reliability of antivibrator is low, so easily causes under antivibrator damping
Drop, greatly threatens the safety of the equipment such as main equipment or nuclear energy equipment.
In order to solve the problems, such as prior art, people have carried out long-term exploration, it is proposed that solution miscellaneous
Scheme.For example, Chinese patent literature discloses a kind of nuclear power station main equipment support large hydraulic antivibrator [application number：
201510552695.9], including：Housing unit；The housing unit is provided with cavity volume；Oil cylinder；The oil cylinder is placed in the appearance
Intracavity；Oil cylinder includes front shroud and back shroud；The front shroud and the back shroud pass through screw or bolt connection, and the two it
Between leave space；Piston or piston rod；The piston or piston rod run through the front shroud, and one end is placed in the space,
One end is located at outside the space through the front shroud；Auxiliary oil cylinder, is symmetrically distributed in around the oil cylinder；Fork-shaped plunger；Afterwards
Cylinder cap；The back cylinder cover is arranged on the housing unit；The back cylinder cover is provided with oscillating bearing；Oscillating bearing passes through bearing
Pressing plate is arranged on the back cylinder cover.Such scheme solves the problems, such as that existing antivibrator sealing is poor to a certain extent, but
It is that the program still cannot fundamentally solve that structure is not compact enough, the reliability of antivibrator is low, easily causes antivibrator damping effect
The problem that fruit declines.
The content of the invention
The purpose of this utility model is for the problems referred to above, there is provided a kind of simple and reasonable, symmetrical expression of compact conformation
Large hydraulic antivibrator.
To reach above-mentioned purpose, this utility model employs following technical proposal：This symmetrical expression large hydraulic antivibrator, bag
The resistance cylinders with inner chamber are included, described resistance cylinders one end closing, the other end are open, and being provided with resistance cylinders can be spacious
The cylinder cap of mouthful closing, slide axially in described resistance cylinders be provided with inner chamber and can by inner chamber be separated into two it is independent
The piston body of plunger shaft, and described piston body is connected with the piston for being arranged on cylinder cap and extending on the outside of resistance cylinders one end
Bar, it is characterised in that described resistance cylinders are cylindrical, and described piston rod along resistance cylinders axial line extend set
Put, it is some with to the periphery and axially extending along resistance cylinders positioned at piston rod axial line week in being circumferentially with for resistance cylinders
Oil return resetting structure is provided with the auxiliary oil cylinder of auxiliary oil pocket, and described auxiliary oil pocket, some being located at is circumferentially with resistance cylinders
Piston rod axial line week built-in damping valve group to the periphery, and described auxiliary oil cylinder and built-in damping valve group be distributed in a ring
It is arranged on piston rod axial line week to the periphery.This antivibrator adopts full-closed structure, the whole machine critical piece of antivibrator all to contain
In resistance cylinders, effectively prevent piston rod and damaged by outside liquid, dust and other foreign bodies.Resistance cylinders etc. expose
Part adopts the preferable austenitic stainless steel of antiseptic power, and this antivibrator has major-minor oil cylinder Contiuum type structure, antivibrator
All load bearing elements are distributed along piston rod circular symmetric, and when running antivibrator, its damping load is completely in piston rod central shaft
On line, auxiliary oil cylinder point row are arranged in into master cylinder periphery, make machine shape be in Cylindrical symmetry, it is not necessary to conventional damper it is independent
External auxiliary cylinder, in addition antivibrator exposed parts surface have high light cleanliness through machining, it is easy to cleaning and decontamination at
Reason, greatly reduces decontamination difficulty during in-service maintenance, and this antivibrator adopts non-welding structure, damper body part to be
Non-welding structure.All parts adopt forging overall processing, are fitted together by high precision screw, effectively prevent weldment
Issuable deformation, deposition defect, while the more convenient mass production of non-welding structure, is easy to disintegrate and zero during in-service maintenance
Part is changed.
In above-mentioned symmetrical expression large hydraulic antivibrator, described auxiliary oil cylinder and built-in damping valve group one by one staggeredly and
It is uniformly arranged on the axial line week of piston rod to the periphery.
In above-mentioned symmetrical expression large hydraulic antivibrator, described oil return resetting structure include being arranged in auxiliary oil cylinder and
Oil return piston in auxiliary oil pocket, described auxiliary oil pocket one end extend to resistance cylinders one end end face and form opening, and described
Auxiliary oil cylinder one end be provided with and the return spring of closure of openings can be covered, and described return spring capping is provided with oil return piston
Return spring, described auxiliary oil pocket are connected with the interface channel being radially arranged along resistance cylinders.
In above-mentioned symmetrical expression large hydraulic antivibrator, described built-in damping valve group includes that axially extending setting is hindered
Buddhist nun's cylinder body outer circumferential and the damping cavity positioned at piston rod axial line week to the periphery, described damping cavity one end extends to cylinder cap one
Side and blocked by damping cavity plug, some damping slots extended radially through in damping cavity, institute are provided with resistance cylinders outer circumferential
Damping valve module is provided with the damping slot stated.
In above-mentioned symmetrical expression large hydraulic antivibrator, described damping slot in wide outside and narrow inside T-shaped, and each
The quantity of the damping slot that damping cavity is connected is two, and two damping slots are corresponded and are connected with plunger shaft respectively.Adopt
Built-in damping valve group, it is ensured that the damage that orifice valve is not easily susceptible in use, orifice valve are to form that whole machine is static, dynamic
The critical component of performance.According to computing formula of surging, wherein orifice valve bore dia, length computation is particularly critical, in this regard, in developing
The small damping principle that early stage antivibrator is generally adopted has been abandoned, but using the T-shaped spiral damping groove with innovative significance.Two
Person compares, and the former is easily caused blocking, and not easy processing, detection because valve opening is minimum, and spiral damping slot structure then have found damping
Valve opening diameter and the best joint of length, reduce requirement of the damping hole to dielectric clean degree, improve manufacturing process performance.
Built-in in addition to damp valve group once mounting, Jing after overall performance test passes, its damping characteristic is difficult change, effective guarantee
The reliability of antivibrator.
In above-mentioned symmetrical expression large hydraulic antivibrator, described resistance cylinders are provided with away from the one end with piston rod
It is connected with the first oscillating bearing by bearing pin on split type key seat, and described split type key seat, and the first described joint shaft
Hold one end and be provided with key seat location-plate.
In above-mentioned symmetrical expression large hydraulic antivibrator, described piston rod extends to the one end on the outside of resistance cylinders and connects
Second joint bearing is connected to, and between piston rod and resistance cylinders, is provided with stroke indicating arm, between piston rod and resistance cylinders
Being additionally provided with can be by the stroke of piston rod and resistance cylinders axially position locking device assembly.10mm is carved with cylinder or piston rod end
The scale at interval, confirms its piston rod stroke and position when can facilitate antivibrator inservice inspection.
In above-mentioned symmetrical expression large hydraulic antivibrator, described stroke locking device assembly includes removable with piston rod
Connected locking seat, is equipped with the locking bolt being detachably connected with resistance cylinders, and described locking in described locking seat
Bolt is connected with locking seat by bolt and nut respectively.
In above-mentioned symmetrical expression large hydraulic antivibrator, described cylinder cap is by hexagon socket head cap screw and damped cylinder body phase
Connect, and between described cylinder cap and piston rod, be provided with piston rod guide ring.Well-designed sealing system：It is reliable in order to ensure
Leak-proof energy, the well-designed multi-seal system of the antivibrator model machine that this project is developed, sealing shape, position are passed through
Special design optimization, key position are provided with 2～3 seal structures, dynamic between piston and oil cylinder, between piston rod and cylinder cap
Sealing position is provided with copper sheathing guider, prevents abrasion or hydraulic performance decline that offset loading force caused to antivibrator.Exclusive oil return is lived
Plug can produce small back pressure to hydraulic system, be conducive to the holding of dynamic property and the reliability of sealing.Reliable material selection：Liquid
The exposed parts such as resistance cylinders of pressure antivibrator, cylinder cap etc. are made using austenitic stainless steel material, remaining parts such as piston
Bar, plunger, monoblock type key seat etc. adopt steel alloy or martensitic stain less steel to make, threaded portion plating manganese phosphate, so as to strengthen zero
The anti-corrosion and anti-wear performance of part.
In above-mentioned symmetrical expression large hydraulic antivibrator, it is radially provided with described resistance cylinders and is connected with damping cavity
Oil return needle.
Compared with prior art, the advantage of this symmetrical expression large hydraulic antivibrator is：Simple structure, using full envelope
Close, holohedral symmetry, single-piston rod, ring put the auxiliary oil cylinder of march-past, independent entirety easy-dismount damping valve block structure, compact conformation is built-in
Formula damps valve group once mounting, and Jing after overall performance test passes, its damping characteristic is difficult change, effective guarantee antivibrator
Reliability, it is easy to cleaning and decontamination processing, greatly reduces decontamination difficulty during in-service maintenance, disintegrate when being easy to in-service maintenance with
Part exchanging, anti-corrosion and anti-wear performance are good.
Description of the drawings
The structure sectional view that Fig. 1 is provided for this utility model.
The lateral partial structurtes sectional view that Fig. 2 is provided for this utility model.
In figure, resistance cylinders 1, cylinder cap 11, hexagon socket head cap screw 111, piston rod guide ring bolt 112, piston body 2, plunger shaft
21st, piston rod 22, auxiliary oil cylinder 3, auxiliary oil pocket 31, oil return piston 32, return spring capping 33, return spring 34, interface channel 35,
Built-in damping valve group 4, damping cavity 41, damping cavity plug 42, damping slot 43, damping valve module 44, split type key seat 5, bearing pin
51st, the first oscillating bearing 52, key seat location-plate 53, second joint bearing 6, stroke indicating arm 7, stroke locking device assembly 8, locking
Seat 81, locking bolt 82, bolt and nut 83, oil return needle 9.
Specific embodiment
The utility model is described in more detail with reference to the accompanying drawings and detailed description.
As shown in Figure 1-2, this symmetrical expression large hydraulic antivibrator, including the resistance cylinders 1 with inner chamber, resistance cylinders 1
One end is closed, and the other end is open, is provided with the cylinder cap 11 of open closing can slide axially in resistance cylinders 1 on resistance cylinders 1
The piston body 2 of two independent plunger shafts 21 is provided with inner chamber and inner chamber can be separated into, and piston body 2 is connected with and wears
On cylinder cap 11 and the piston rod 22 on the outside of 1 one end of resistance cylinders is extended to, resistance cylinders 1 are cylindrical, and 22 edge of piston rod
The axial line of resistance cylinders 1 is extended, some with positioned at 22 axial line circumference of piston rod in being circumferentially with for resistance cylinders 1
Periphery and along the auxiliary oil cylinder 3 of the axially extending auxiliary oil pocket 31 of resistance cylinders 1, and oil return resetting structure is provided with auxiliary oil pocket 31,
Being circumferentially with for resistance cylinders 1 is some positioned at 22 axial line of piston rod week built-in damping valve groups 4 to the periphery, and auxiliary oil cylinder 3
Be distributed with built-in damping valve group 4 that to be arranged on 22 axial line of piston rod all to the periphery in a ring, auxiliary oil cylinder 3 and built-in orifice valve
Group 4 staggeredly and is uniformly arranged on the axial line week of piston rod 22 to the periphery one by one, and this antivibrator adopts full-closed structure, antivibrator
Whole machine critical piece is all included in resistance cylinders 1, effectively prevent that piston rod 22 suffers outside liquid, dust and other are different
The damage of thing.1 grade exposed parts of resistance cylinders adopt the preferable austenitic stainless steel of antiseptic power, and this antivibrator have it is major-minor
Oil cylinder Contiuum type structure, all load bearing elements of antivibrator are distributed along piston rod circular symmetric, when running antivibrator, its damping
3 points of row of auxiliary oil cylinder are arranged in master cylinder periphery completely on 22 central axis of piston rod by load, make machine shape be in cylinder pair
Claim, it is not necessary to the independent external auxiliary cylinder of conventional damper, antivibrator exposed parts surface is through machining in addition, have compared with
Best bright finish, it is easy to cleaning and decontamination processing, greatly reduces decontamination difficulty during in-service maintenance, and this antivibrator adopts solderless
Binding structure, damper body part are non-welding structure.All parts adopt forging overall processing, by high precision screw group
It is fitted together, effectively prevent the issuable deformation of weldment, deposition defect, while the more convenient batch metaplasia of non-welding structure
Produce, be easy to disintegrate and part exchanging during in-service maintenance.
Specifically, the oil return resetting structure in the present embodiment includes being arranged in auxiliary oil cylinder 3 and in auxiliary oil pocket 31
Oil return piston 32,31 one end of auxiliary oil pocket extend to 1 one end end face of resistance cylinders and form opening, and be provided with can be by 3 one end of auxiliary oil cylinder
The return spring capping 33 of closure of openings, and return spring capping 33 is provided with return spring 34, auxiliary oil pocket 31 with oil return piston 32
Be connected with the interface channel 35 being radially arranged along resistance cylinders 1, be radially provided with resistance cylinders 1 be connected with damping cavity 41 return
Fuel tap pin 9, wherein, built-in damping valve group 4 here includes axially extending setting 1 outer circumferential of resistance cylinders and is located at piston
The all damping cavities 41 to the periphery of 22 axial line of bar, 41 one end of damping cavity extends to 11 side of cylinder cap and by 42 envelope of damping cavity plug
It is stifled, some damping slots 43 extended radially through in damping cavity 41 are provided with 1 outer circumferential of resistance cylinders, be provided with damping in damping slot 43
Valve module 44.
Preferably, damping slot 43 here is in wide outside and narrow inside T-shaped, and the damping slot 43 that each damping cavity 41 is connected
Quantity be two, two damping slots 43 are corresponded and are connected with plunger shaft 21 respectively.Built-in orifice valve is employed
Group, it is ensured that the damage that orifice valve is not easily susceptible in use, orifice valve are to form whole machine static state, the crucial portion of dynamic property
Part.According to computing formula of surging, wherein orifice valve bore dia, length computation is particularly critical, in this regard, early stage resistance has been abandoned in developing
The small damping principle that Buddhist nun's device is generally adopted, but using the T-shaped spiral damping groove with innovative significance.Both compare, the former
Blocking, and not easy processing, detection are easily caused because valve opening is minimum, spiral damping slot structure then have found orifice valve bore dia and length
The best joint of degree, reduces requirement of the damping hole to dielectric clean degree, improves manufacturing process performance.Built-in resistance in addition
Buddhist nun valve group once mounting, Jing after overall performance test passes, its damping characteristic is difficult change, the effective guarantee reliability of antivibrator
Property.
Further, resistance cylinders 1 here are provided with split type key seat 5, and split away from the one end with piston rod 22
It is connected with the first oscillating bearing 52 by bearing pin 51 on formula key seat 5, and 52 one end of the first oscillating bearing is provided with key seat location-plate 53,
Wherein, one end that piston rod 22 here is extended on the outside of resistance cylinders 1 is connected with second joint bearing 6, and piston rod 22 with
Stroke indicating arm 7 is provided between resistance cylinders 1, being additionally provided between piston rod 22 and resistance cylinders 1 can be by piston rod 22 and resistance
The stroke locking device assembly 8 of 1 axially position of Buddhist nun's cylinder body, is carved with the scale at 10mm intervals in resistance cylinders 1 or 22 end of piston rod,
Its 22 stroke of piston rod and position are confirmed when can facilitate antivibrator inservice inspection.Wherein, stroke locking device assembly 8 here includes
The locking seat 81 being connected removable with piston rod 22, is equipped with the locking spiral shell being detachably connected with resistance cylinders 1 in locking seat 81
Bolt 82, and locking bolt 82 is connected with locking seat 81 by bolt and nut 83 respectively.
Further, the cylinder cap 11 in the present embodiment is connected with resistance cylinders 1 by hexagon socket head cap screw 111, and cylinder cap
Piston rod guide ring bolt 112, well-designed sealing system are provided between 11 and piston rod 22：In order to ensure reliable anti-leak
Performance, the well-designed multi-seal system of the antivibrator model machine that this project is developed, sealing shape, position are through special
Design optimization, key position are provided with 2～3 seal structures, between piston 2 and resistance cylinders 1, between piston rod 22 and cylinder cap 11
Dynamic sealing position be provided with copper sheathing guider, prevent abrasion or hydraulic performance decline that offset loading force caused to antivibrator.Exclusive returns
Oily piston can produce small back pressure to hydraulic system, be conducive to the holding of dynamic property and the reliability of sealing.Reliable material choosing
With：The exposed parts of hydraulic damper such as resistance cylinders 1,11 grade of cylinder cap are made using austenitic stainless steel material, and remaining zero
Part such as piston rod 22, etc. adopt steel alloy or martensitic stain less steel to make, threaded portion plating manganese phosphate, so as to strengthen the anti-of part
Rotten and anti-wear performance, and for the ease of the installation of this antivibrator, suspension ring can be set on resistance cylinders 1 and piston rod 22.
Specific embodiment described herein is only explanation for example to this utility model spirit.This utility model institute
Category those skilled in the art can make various modifications or supplement or using similar to described specific embodiment
Mode substitute, but without departing from it is of the present utility model spirit or surmount scope defined in appended claims.
Although more used herein resistance cylinders 1, cylinder cap 11, hexagon socket head cap screw 111, piston rod guide ring bolt 112,
Piston body 2, plunger shaft 21, piston rod 22, auxiliary oil cylinder 3, auxiliary oil pocket 31, the capping 33, return spring of oil return piston 32, return spring
34th, interface channel 35, it is built-in damping valve group 4, damping cavity 41, damping cavity plug 42, damping slot 43, damping valve module 44, point
Body formula key seat 5, bearing pin 51, the first oscillating bearing 52, key seat location-plate 53, second joint bearing 6, stroke indicating arm 7, moving lock
Determine the terms such as device assembly 8, locking seat 81, locking bolt 82, bolt and nut 83, oil return needle 9, but be not precluded from using other arts
The probability of language.It is used for the purpose of more easily describing and explaining essence of the present utility model using these terms；They are solved
It is all contrary with this utility model spirit to be interpreted into any additional restriction.
Claims (10)
1. a kind of symmetrical expression large hydraulic antivibrator, including the resistance cylinders with inner chamber (1), described resistance cylinders (1)
End seal is closed, and the other end is open, and being provided with resistance cylinders (1) can be by the cylinder cap (11) of open closing, described resistance cylinders (1)
Inside slide axially and be provided with inner chamber and inner chamber can be separated into the piston body (2) of two independent plunger shafts (21), and institute
The piston body (2) stated is connected with the piston rod (22) being arranged on cylinder cap (11) and extend on the outside of resistance cylinders (1) one end, its
It is characterised by, the cylindrical and described piston rod (22) of described resistance cylinders (1) prolongs along the axial line of resistance cylinders (1)
Setting is stretched, it is some with all to the periphery and along damped cylinder positioned at piston rod (22) axial line in being circumferentially with for resistance cylinders (1)
Oil return resetting structure is provided with the auxiliary oil cylinder (3) of the axially extending auxiliary oil pocket (31) of body (1), and described auxiliary oil pocket (31),
Being circumferentially with for resistance cylinders (1) is some positioned at piston rod (22) axial line week built-in damping valve groups (4) to the periphery, and institute
Distribution is arranged on piston rod (22) axial line week to the periphery in a ring for the auxiliary oil cylinder (3) stated and built-in damping valve group (4).
2. symmetrical expression large hydraulic antivibrator according to claim 1, it is characterised in that described auxiliary oil cylinder (3) and interior
Put formula damping valve group (4) to interlock one by one and be uniformly arranged on the axial line week of piston rod (22) to the periphery.
3. symmetrical expression large hydraulic antivibrator according to claim 1, it is characterised in that described oil return resetting structure bag
The oil return piston (32) for being arranged in auxiliary oil cylinder (3) and being located in auxiliary oil pocket (31) is included, described auxiliary oil pocket (31) one end extends
Formed to resistance cylinders (1) one end end face and be open, and be provided with can be by the return spring of closure of openings for described auxiliary oil cylinder (3) one end
Capping (33), and described return spring capping (33) is provided with return spring (34), described auxiliary oil pocket with oil return piston (32)
(31) it is connected with the interface channel (35) being radially arranged along resistance cylinders (1).
4. the symmetrical expression large hydraulic antivibrator according to claim 1 or 2 or 3, it is characterised in that described built-in resistance
Buddhist nun's valve group (4) arranges resistance cylinders (1) outer circumferential and is located at piston rod (22) axial line week to the periphery including axially extending
Damping cavity (41), described damping cavity (41) one end are extended to cylinder cap (11) side and are blocked by damping cavity plug (42),
Resistance cylinders (1) outer circumferential is provided with some damping slots (43) extended radially through in damping cavity (41), described damping slot (43)
Damping valve module (44) is provided with inside.
5. symmetrical expression large hydraulic antivibrator according to claim 4, it is characterised in that described damping slot (43) is in
Wide outside and narrow inside is T-shaped, and the quantity of the connected damping slot (43) of each damping cavity (41) is two, two damping slots (43) point
Do not correspond and be connected with plunger shaft (21).
6. symmetrical expression large hydraulic antivibrator according to claim 4, it is characterised in that described resistance cylinders (1) are remote
From the one end with piston rod (22) be provided with split type key seat (5), and described split type key seat (5) by bearing pin (51) with
First oscillating bearing (52) is connected, and described the first oscillating bearing (52) one end is provided with key seat location-plate (53).
7. symmetrical expression large hydraulic antivibrator according to claim 6, it is characterised in that described piston rod (22) extends
One end to resistance cylinders (1) is connected between second joint bearing (6), and piston rod (22) and resistance cylinders (1) and sets
There is stroke indicating arm (7), being additionally provided between piston rod (22) and resistance cylinders (1) can be by piston rod (22) and resistance cylinders
(1) stroke locking device assembly (8) of axially position.
8. symmetrical expression large hydraulic antivibrator according to claim 7, it is characterised in that described stroke locking device assembly
(8) include the locking seat (81) being connected removable with piston rod (22), be equipped with and resistance cylinders in described locking seat (81)
(1) the detachable locking bolt (82) being connected, and described locking bolt (82) passes through bolt and nut (83) and locking seat respectively
(81) it is connected.
9. symmetrical expression large hydraulic antivibrator according to claim 1, it is characterised in that described cylinder cap (11) is by interior
Hex bolts (111) is connected with resistance cylinders (1), and piston rod guiding is provided between described cylinder cap (11) and piston rod (22)
Ring bolt (112).
10. symmetrical expression large hydraulic antivibrator according to claim 4, it is characterised in that on described resistance cylinders (1)
It is radially provided with the oil return needle (9) being connected with damping cavity (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620971384.6U CN206092779U (en) | 2016-08-26 | 2016-08-26 | Large -scale hydraulic damper of symmetry formula |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620971384.6U CN206092779U (en) | 2016-08-26 | 2016-08-26 | Large -scale hydraulic damper of symmetry formula |
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| CN206092779U true CN206092779U (en) | 2017-04-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246790A (en) * | 2016-08-26 | 2016-12-21 | 常州格林电力机械制造有限公司 | Symmetrical expression large hydraulic antivibrator |
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2016
- 2016-08-26 CN CN201620971384.6U patent/CN206092779U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246790A (en) * | 2016-08-26 | 2016-12-21 | 常州格林电力机械制造有限公司 | Symmetrical expression large hydraulic antivibrator |
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