CN107165042A - Imidazoles ball-type bridge pad - Google Patents
Imidazoles ball-type bridge pad Download PDFInfo
- Publication number
- CN107165042A CN107165042A CN201710565702.8A CN201710565702A CN107165042A CN 107165042 A CN107165042 A CN 107165042A CN 201710565702 A CN201710565702 A CN 201710565702A CN 107165042 A CN107165042 A CN 107165042A
- Authority
- CN
- China
- Prior art keywords
- ball
- plate
- imidazoles
- counterbore
- bridge pad
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
- E01D19/042—Mechanical bearings
- E01D19/046—Spherical bearings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Pivots And Pivotal Connections (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
Abstract
The invention discloses a kind of imidazoles ball-type bridge pad, its friction structure includes ball-type friction structure and plane friction structure；The ball-type friction structure is configured to：It is formed with ball-and-socket in lower support plate, and then a spherical crown liner plate is provided, sphere and the ball-and-socket of the spherical crown liner plate coordinate, the bottom surface of spherical crown liner plate is provided with the pit with counterbore in bottom surface, part of the note pit in addition to counterbore is foundation ditch upper；Planar friction structure is configured to：The lower surface of upper bracket plate is equiped with a stainless steel plate, and the bottom hole of the stainless steel plate and the counterbore coordinates, and foundation ditch is closed in the cooperation based on stainless steel plate and counterbore bottom hole；Wherein, imidazoles salt liquid is filled up in foundation ditch.It is maintainable more preferable according to the present invention under conditions of ensureing compared with high bearing capacity.
Description
Technical field
The present invention relates to a kind of ball-type bridge pad.
Background technology
Ball-type bridge pad is the bridge pad grown up on the basis of pot rubber bearing, earlier ball-type bridge
Bearing can be found in Chinese patent literature CN2515232Y, and it has a ball-and-socket in lower support plate, and ball-and-socket is built with a spherical crown
Liner plate, forms lower friction structure between spherical crown liner plate and ball-and-socket.The upper surface of spherical crown liner plate is plane, for passing through upper friction structure
Accept upper bracket plate.Upper friction structure is generally by being installed in the polyfluortetraethylene plate of spherical crown liner plate upper surface and positioned at upper bracket plate
The stainless steel plate of lower surface is constituted.Wherein polyfluortetraethylene plate relatively easily fails.
In order to reduce the coefficient of friction of upper friction structure, in some implementations, inserted on the rubbing surface of upper friction structure
Lubricant, to reduce the coefficient of friction of upper friction structure, but thereby structure still can not overcome polyfluortetraethylene plate to be easy to mistake
The problem of effect, it is that polyfluortetraethylene plate, except frictional force to be carried, will also carry the weight that upper bracket plate is transmitted.
Then polyfluortetraethylene plate is replaced to prolong using filled polytetrafluoroethylene plate in Chinese patent literature CN101492906A
The service life of long ball-type bridge pad, filled polytetrafluoroethylene plate has of a relatively high bearing capacity, only, and it is combined
The surface of intermediate layer sliding plate is still pure polytetrafluoroethylene floor, still relatively easy failure, and it still needs the corresponding friction of carrying
And heavy duty.
Chinese patent literature CN101705722A then uses multiple slip face to mitigate the frictional dissipation of single slide surface, but many
Slide surface can increase the height of bridge pad, weaken overall stability, in order that bridge pad is with relatively high
Stability is, it is necessary to which additional other structures, are that overall structure is relatively complicated.
Chinese patent literature CN101545291A then discloses a kind of magnetic suspension structure, can be made by magnetic suspension structure
Normal pressure between lower structural friction face, so as to so that the rate of wear of such as polyfluortetraethylene plate slows down.But magnetic suspension is often
It is just right between lower magnet to need, when producing sliding, it is impossible to just right between lower magnet in guarantees, and bridge pad generation can be made to topple power
Square, and make bridge pad bad stability.
The content of the invention
It is an object of the invention to provide one kind under conditions of ensureing compared with high bearing capacity, maintainable preferably imidazoles
Class ball-type bridge pad.
According to embodiments of the invention there is provided a kind of imidazoles ball-type bridge pad, including upper bracket plate and lower support plate,
And the friction structure to provide bridge pad movement or rotation work face between upper lower support plate, the friction knot
Structure includes ball-type friction structure and plane friction structure；The ball-type friction structure is configured to：Ball is formed with lower support plate
Nest, and then provide a spherical crown liner plate, the sphere of the spherical crown liner plate coordinates with ball-and-socket, and the bottom surface of spherical crown liner plate is opened in bottom surface upper
There is the pit with counterbore, part of the note pit in addition to counterbore is foundation ditch；
Planar friction structure is configured to：The lower surface of upper bracket plate is equiped with a stainless steel plate, the stainless steel plate and the counterbore
Bottom hole coordinate, and foundation ditch is closed in the cooperation based on stainless steel plate and counterbore bottom hole；
Wherein, imidazoles salt liquid is filled up in foundation ditch.
Above-mentioned imidazoles ball-type bridge pad, alternatively, imidazoles salt liquid are also partially filled with stainless steel plate and counterbore
Between gap.
Alternatively, a passage for being used to supplement imidazoles salt liquid is provided with upper bracket plate, the import of the passage is furnished with
Plug.
Alternatively, the imidazoles salt liquid is the methylimidazole cobalt tetracarbonyl salting liquid of 1- ethyl acetate -3.
Alternatively, planar friction structure surrounds counterbore, provided with upper sealing ring.
Alternatively, the stainless steel plate includes the substrate for being installed in upper bracket plate lower surface and with substrate one and to downward
Reach the convex portion of counterbore bottom hole.
Alternatively, it is additionally provided with dust-proof coaming plate around friction structure；
The top of dust-proof coaming plate is fixedly mounted in upper bracket plate.
Alternatively, the foundation ditch is ball-and-socket, ball-and-socket depth and ball-and-socket basal diameter positive correlation.
Alternatively, counterbore depth is not less than 1.5mm, and no more than 5.0mm.
Alternatively, gap is left between the bottom surface of spherical crown liner plate and the lower surface of upper bracket plate.
According to embodiments of the invention, the mobile slide surface for being different from conventional bridge pad uses stainless steel plate and poly- four
The friction engageable surface of PVF plate, and it is stainless steel plate and imidazoles salt liquid junctions to employ the major part of friction engageable surface
Structure, become solid-solid friction into compound friction structure, the compound friction structure include solid-solid friction and solid-liquid friction, significantly
Coefficient of friction is reduced, and make it that spherical crown liner plate is hardly damaged, and reduces maintenance times, and improves maintainability.
Brief description of the drawings
Fig. 1 is to the half-sectional structural representation of longitudinally-moving bridge pad in an embodiment along bridge.
Fig. 2 is Fig. 1 A portions enlarged drawing.
Fig. 3 is the half-sectional structural representation of direction across bridge longitudinally-moving bridge pad in an embodiment.
Fig. 4 is the half-sectional structural representation of the laterally movable bridge pad of direction across bridge in an embodiment.
Fig. 5 is to the half-sectional structural representation of laterally movable bridge pad in an embodiment along bridge.
Fig. 6 is the multidirectional half-sectional structural representation of mobile bridges bearing in an embodiment.
In figure：1. dust-proof coaming plate, 2. lower seals, sealing ring on 3., 4. upper bracket plate bolts, 5. upper bracket plates, 6. are not
Become rusty steel plate, 7. glyoxaline ion liquids, 8. spherical crown liner plates, 9. sphere stainless steel plates, 10. passages, 11. spherical crown supra polymers poly- four
PVF plate, 12. lower support plates, 13. lower support plate bolts.
Embodiment
The realization of the object of the invention, depends on the physical attribute of liquid itself, it will be understood by those of skill in the art that liquid
The compression ratio of body is very small, or even all smaller than many solids, and under effective sealing, liquid can be used as solid in principle,
And with very strong face bearing capacity.
Typically, hydraulic cylinder is the main application of above-mentioned principle, and different from cylinder, the precision of cylinder is very low, and liquid
Cylinder pressure then has of a relatively high precision, in that gas differs very big with the compression ratio of liquid.
In technical field of bridge, or even in whole technical field, it is common that for low-friction coefficient face, especially
Plate face, it has a very high flatness, and stainless steel plate 6 as shown in Figure 2, and its rubbing surface should equally have good flat
Coordinating with very high compatible degree between counterbore bottom hole in spherical crown liner plate 8 in face degree, stainless steel plate 6 and Fig. 2, and bridge pad
Generally require to carry such as bridge beam body, so as to provide friction engageable surface very big engaging force, it is ensured that imidazoles
Saline solution body effectively can be sealed in foundation ditch.
Figure of description 1 is that remaining accompanying drawing in addition to Fig. 2 is to the half-sectional structural representation of longitudinally-moving bridge pad along bridge
It is visible in the concentration bridge pad structure currently commonly used, figure, its friction structure reconstruct realized based on imidazoles class I liquid I, principle
On be the same, below only with the suitable bridge shown in Figure of description 1 to the half-sectional structural representation of longitudinally-moving bridge pad, and tie
Close accompanying drawing 2 to illustrate, for other kinds of bridge pad, those skilled in the art is based on the present embodiment, is to be easy to reason
Solve and realize.
For bridge pad, as shown in figure 1, lower support plate 12 is fixed by lower support plate bolt 13 with such as bridge pier column
Connection, upper bracket plate 5 is fixedly connected by upper bracket plate bolt 4 with such as bridge beam body, then when bridge beam body deformation, movement
When, relative motion can be produced between upper lower support plate, if be fixedly connected between upper bracket plate 5 and lower support plate 12, it is likely that meeting
Bridge pad is caused to be damaged.Therefore, friction structure can be set between upper bracket plate 5 and lower support plate 12, it is above-mentioned for balancing
Relative motion.
Friction structure between upper lower support plate generally comprises two parts, and for ball-type bridge pad, it is at least wrapped
Containing two parts, one of part is ball-type friction structure, is normally at following, and another part is planar friction structure,
It is normally above.
Wherein ball-type friction structure is principal element of the spherical bearing why it is referred to as ball-type bridge pad, its basic structure
Making is：In general, being processed from the upper surface of boss provided with a boss in lower support plate 12, processing ball-and-socket, so
One spherical crown liner plate coordinated with the ball-and-socket, spherical crown liner plate and then one spherical crown liner plate of offer, the sphere of the spherical crown liner plate 8 are provided afterwards
Coordinate with ball-and-socket, land portions and the ball-and-socket of spherical crown liner plate 8 coordinate, to provide pivoting friction.
The upper surface of spherical crown liner plate 8 is that the bottom surface of spherical crown liner plate 8 is then used to provide mobile friction.
In addition, the bottom surface of spherical crown liner plate 8 processes pit, shrinkage pool includes two parts of counterbore and foundation ditch, and wherein counterbore is removed
Outside the supporting surface for providing stainless steel plate 6, its wall is additionally operable to constrain the range of stainless steel plate 6, therefore, the skill of this area
Art personnel design the size of counterbore based on the range of mobile friction.
In the present embodiment, part of the note pit in addition to counterbore is foundation ditch, more accurate drop, in fig. 2, for accommodating imidazoles
The part of class particle liquid 7 is foundation ditch.
For planar friction structure, it is configured to：The lower surface of upper bracket plate 5 is equiped with a stainless steel plate 6, the stainless steel
The bottom hole of plate 6 and the counterbore coordinates, and foundation ditch is closed in the cooperation based on stainless steel plate 6 and counterbore bottom hole, and closing mode is main
The normal pressure produced by foregoing upper bracket plate 5 and institute's load.
Stainless steel plate 6 is located at the part in counterbore, should have in the range of being constrained in the horizontal direction by counterbore certain
Activity space, the activity space determines the sliding scope of stainless steel plate 6, upper bracket plate 5 is determined in other words in undersetting
Sliding scope on plate 12.
It is to be further understood that on the basis of the radial direction of the bottom surface of spherical crown liner plate 8, when stainless steel plate 6 slides to a direction
During to maximum, with the party in the opposite direction on, stainless steel plate 6 can not be disengaged with the bottom hole of counterbore, otherwise can not close base
Hole.
Wherein, imidazoles salt liquid is filled up in foundation ditch.
To imidazoles salt liquid, there is the research more than comparison in mechanical field, because the present invention is not directed to the material
Research, simply application to the imidazoles salt liquid for frictional interface can not explain to this, may refer to,
Such as " the tribology behavioral study of two kinds of ionic liquids "（《Lubrication and sealing》, Zhang Shengmao, Li Jian, Dai Chuan in 2006）Disclosed
Two kinds of imidazoles salt liquid, such as 1- butyl -3- methyl imidazolium tetrafluoroborates and 1 ethoxy -3- methyl imidazolium tetrafluoroborates.
It should be appreciated that liquid here refers to the solution of imidazoles salt, in the solution, compound exists with ionic means,
Therefore the liquid in terms of also known as such tribology is particle liquid.
Similarly, for another example " tribology research of ion liquid lubricant "（《Synthesize lubriation material》- 2008, Zhu Liye, it is old
Render meritorious service）, all refer to the Tribological Applications of ionic liquid.
The preferred methylimidazole cobalt tetracarbonyl salting liquid of 1- ethyl acetate -3 in the preferred embodiment of the invention, inventor carries
Preparation method for the salt is as follows：
It is synthesized by two-step process, the first step first passes through the nucleophilic substitution of N- methylimidazoles and ethyl chloroacetate, prepares and contains
The halogen of 1- ethyl acetate base -3- methyl imidazolium cations；Second step carries out ion-exchange reactions again, with sodium tetracarbonyl cobaltate
[Co (CO)4]—Anion replaces Cl—Ion, finally gives the methylimidazole cobalt tetracarbonyl salt liquid of 1- ethyl acetate -3.
Friction-wear test is done to the methylimidazole cobalt tetracarbonyl salt liquid of 1- ethyl acetate -3 of synthesis, coefficient of friction is
Shown in following table, friction system of the coefficient of friction far below between stainless steel plate and polyfluortetraethylene plate 0.07 ~ 0.15 shown by following table
Number.
When carrying out bridge pad assembling again, it is desirable to which imidazoles saline solution body can be completely filled with foundation ditch, therefore, insert imidazoles
During class salt liquid, the imidazoles salting liquid that volume is more than foundation ditch volume can be inserted, is that imidazoles salting liquid relatively glues
Thick, mobility is poor in other words, if loading is smaller, be easily caused filling it is unreal, fill insufficient in other words, filling compared with
Many imidazoles salting liquids, then by pressure produced after assembling, can squeeze out bubble etc., the imidazoles of surplus
The gap that salting liquid can enter or spill between stainless steel plate 6 and counterbore.
Fill in sufficient foundation ditch, if without bubble, its bearing capacity can be effectively improved, in this technology bar
Under part, produced phenomenon also have be exactly imidazoles salting liquid can part the gap being filled between stainless steel plate 6 and counterbore.
Gap between stainless steel plate 6 and counterbore is by after relatively sticky imidazoles saline solution filler, moreover it is possible to play certain
Sealing function, in other words, as shown in Fig. 2 certain sealability can be produced.
Correspondingly,, may under the conditions of environment is converted etc. even because in seasonal variations based on reasons such as diffusion, volatilizations
A small amount of imidazoles salting liquid is caused to be lost, in order to provide continual and steady bearing capacity, one is provided with upper bracket plate 4 is used to mend
The passage 10 of imidazoles salt liquid is filled, the import of the passage 10 is furnished with plug.
The preferred plug of plug.
Understand that used imidazoles salt liquid is solution after all, and solute may volatilize, solute based on foregoing content
After volatilization, the liquid that can make is more sticky, and total amount can also be reduced, and in order to reduce the loss of imidazoles salt liquid, plane is rubbed
Wipe structure and surround counterbore, provided with upper sealing ring 3.
In general, the stainless steel plate 6 for being assemblied in the lower surface of upper bracket plate 5 is often planar panel structure, to adapt to this
The embodiment of invention, the stainless steel plate 6 used is needed with the structure for adapting to foregoing counterbore, in view of this, described stainless
Although steel plate 6 can also use surface plate, inevitably because stainless steel plate 6 now can be thicker, it is in upper bracket
Assembling on plate 5 is relatively difficult, in view of this, in preferred embodiment, as shown in Fig. 2 stainless steel plate 6 includes being installed in
The substrate of upper bracket plate lower surface and with substrate one and extend downwardly into the convex portion of counterbore bottom hole.
Projected area of the substrate on the plane parallel to the bottom surface of spherical crown liner plate 8 is more than the throwing at grade of convex portion
Shadow area, in other words, substrate have an assembly space, and substrate can compare relatively thin, easily assembling.
As further protection, dust-proof coaming plate 1 is additionally provided with around friction structure, to reduce dust engaging friction structure
Amount, makes the rubbing surface of friction structure keep relatively clean.
Preferably, the top of dust-proof coaming plate 1 is fixedly mounted in upper bracket plate 5, the dust-proof coaming plate in upper bracket plate 5
1 is more prone to construction than the dust-proof coaming plate in lower support plate 12, and the scope constrained is smaller, does not influence bridge pad
Action.
In preferred embodiment, the foundation ditch is ball-and-socket, and on the other hand one side difficulty of processing, can also produce than relatively low
Life must boundary friction effect, make formed friction structure more stable.
Furthermore, it is necessary to take into account correlative factor be ball-and-socket depth and ball-and-socket basal diameter positive correlation.
In principle, counterbore is smaller, is more conducive to assembling, and used quantity of material is also smaller, but as it was previously stated, counterbore
Also need to carry out Stroke Control and accommodating portion imidazoles salt liquid, therefore, its depth is also unsuitable too small, in view of this, passes through
Experiment determines that counterbore depth is not less than 1.5mm, and no more than 5.0mm.
In order to reduce interference, gap is left between the bottom surface of spherical crown liner plate 8 and the lower surface of upper bracket plate 5.
Claims (10)
1. a kind of imidazoles ball-type bridge pad, including upper bracket plate and lower support plate, and between upper lower support plate
To provide bridge pad movement or rotation work face friction structure, the friction structure include ball-type friction structure and plane
Friction structure；Characterized in that, the ball-type friction structure is configured to：Ball-and-socket is formed with lower support plate, and then provides one
Spherical crown liner plate, the sphere of the spherical crown liner plate coordinates with ball-and-socket, and the bottom surface of spherical crown liner plate is provided with the recessed of counterbore in bottom surface upper
Hole, part of the note pit in addition to counterbore is foundation ditch；
Planar friction structure is configured to：The lower surface of upper bracket plate is equiped with a stainless steel plate, the stainless steel plate and the counterbore
Bottom hole coordinate, and foundation ditch is closed in the cooperation based on stainless steel plate and counterbore bottom hole；
Wherein, imidazoles salt liquid is filled up in foundation ditch.
2. imidazoles ball-type bridge pad according to claim 1, it is characterised in that imidazoles salt liquid is also partly filled out
The gap filled between stainless steel plate and counterbore.
3. imidazoles ball-type bridge pad according to claim 1 or 2, it is characterised in that one is provided with upper bracket plate
Passage for supplementing imidazoles salt liquid, the import of the passage is furnished with plug.
4. imidazoles ball-type bridge pad according to claim 1, it is characterised in that the imidazoles salt liquid is 1- second
The methylimidazole cobalt tetracarbonyl salting liquid of acetoacetic ester -3.
5. imidazoles ball-type bridge pad according to claim 1, it is characterised in that planar friction structure surrounds counterbore,
Provided with upper sealing ring.
6. imidazoles ball-type bridge pad according to claim 1 or 5, it is characterised in that the stainless steel plate includes dress
It is located at the substrate of upper bracket plate lower surface and with substrate one and extends downwardly into the convex portion of counterbore bottom hole.
7. imidazoles ball-type bridge pad according to claim 6, it is characterised in that be additionally provided with around friction structure dust-proof
Coaming plate；
The top of dust-proof coaming plate is fixedly mounted in upper bracket plate.
8. imidazoles ball-type bridge pad according to claim 1, it is characterised in that the foundation ditch is ball-and-socket, ball-and-socket is deep
Degree and ball-and-socket basal diameter positive correlation.
9. the imidazoles ball-type bridge pad according to claim 1 or 7, it is characterised in that counterbore depth is not less than
1.5mm, and no more than 5.0mm.
10. imidazoles ball-type bridge pad according to claim 1, it is characterised in that the bottom surface of spherical crown liner plate and upper branch
Gap is left between the lower surface of seat board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710565702.8A CN107165042B (en) | 2017-07-12 | 2017-07-12 | Imidazoles ball-type bridge pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710565702.8A CN107165042B (en) | 2017-07-12 | 2017-07-12 | Imidazoles ball-type bridge pad |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107165042A true CN107165042A (en) | 2017-09-15 |
| CN107165042B CN107165042B (en) | 2019-01-22 |
Family
ID=59823873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710565702.8A Active CN107165042B (en) | 2017-07-12 | 2017-07-12 | Imidazoles ball-type bridge pad |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107165042B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2143024C1 (en) * | 1999-05-14 | 1999-12-20 | Открытое акционерное общество "Мостотрест" | Supporting part of bridge |
| CN201381474Y (en) * | 2009-01-22 | 2010-01-13 | 成都市新筑路桥机械股份有限公司 | Spherical steel supporting seat |
| CN201534956U (en) * | 2009-06-15 | 2010-07-28 | 衡水橡胶股份有限公司 | Self-lubricating curved steel support for bridge |
| CN203096602U (en) * | 2012-12-19 | 2013-07-31 | 洛阳双瑞特种装备有限公司 | Durable anti-wear spherical bearing for railroad bridge |
| CN205741892U (en) * | 2016-05-31 | 2016-11-30 | 镇江伟民新材料制品有限公司 | A kind of bridge support sliding plate for high ferro of high intensity |
-
2017
- 2017-07-12 CN CN201710565702.8A patent/CN107165042B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2143024C1 (en) * | 1999-05-14 | 1999-12-20 | Открытое акционерное общество "Мостотрест" | Supporting part of bridge |
| CN201381474Y (en) * | 2009-01-22 | 2010-01-13 | 成都市新筑路桥机械股份有限公司 | Spherical steel supporting seat |
| CN201534956U (en) * | 2009-06-15 | 2010-07-28 | 衡水橡胶股份有限公司 | Self-lubricating curved steel support for bridge |
| CN203096602U (en) * | 2012-12-19 | 2013-07-31 | 洛阳双瑞特种装备有限公司 | Durable anti-wear spherical bearing for railroad bridge |
| CN205741892U (en) * | 2016-05-31 | 2016-11-30 | 镇江伟民新材料制品有限公司 | A kind of bridge support sliding plate for high ferro of high intensity |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107165042B (en) | 2019-01-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106370542B (en) | Sealing and the cooling system of fretting corrosion testing stand are simulated deeply in a kind of full sea | |
| CN109975003B (en) | Ground simulation test method and device for satellite tracking rotary table | |
| CN107165042B (en) | Imidazoles ball-type bridge pad | |
| CN115201016A (en) | Rheological test device and test method under true triaxial stress path of simulated hard rock | |
| CN209228762U (en) | A kind of hydraulic leg oil cylinder | |
| CN202090282U (en) | Spheroidal support seat with function of repeated stepless height adjustments | |
| CN106051166B (en) | A kind of flush slag processing machine bearing and its sealing device under water | |
| CN108951405A (en) | A kind of large-tonnage spherical steel bearing for being easily installed and safeguarding | |
| CN204717038U (en) | Novel quick closing valve hard seal fixing ball valve | |
| CN210281948U (en) | Automatic polishing solution adding device for grinding metallographic specimen | |
| CN212779840U (en) | Static pressure type horizontal sliding table with I-shaped structure | |
| CN206928183U (en) | A kind of spheroid shape girder falling vibration absorption and isolation support | |
| CN208917674U (en) | A kind of large-tonnage spherical steel bearing for being easily installed and safeguarding | |
| CN202369917U (en) | Self-lubricating ball joint support | |
| CN112828835A (en) | Multi-degree-of-freedom static pressure decoupling platform | |
| CN107727314A (en) | Reductor sealing property test equipment and method of testing | |
| CN107905094A (en) | A kind of adaptive bridge pad | |
| CN211574074U (en) | Hooke joint | |
| CN111693239A (en) | Static pressure type horizontal sliding table with I-shaped structure | |
| CN207879358U (en) | A kind of aqueous medium mine individual hydraulic prop | |
| CN109869538B (en) | Support for pipeline valve | |
| CN209354210U (en) | Steam turbine bearing regulating device | |
| CN209656530U (en) | A kind of antifriction apparatus that can measure coefficient of friction | |
| CN208831497U (en) | Aligning thrust bearing assembly | |
| CN204255356U (en) | Transit A-frame |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |