CN106763320A - A kind of Retarder independent installation structure - Google Patents
A kind of Retarder independent installation structure Download PDFInfo
- Publication number
- CN106763320A CN106763320A CN201611155009.5A CN201611155009A CN106763320A CN 106763320 A CN106763320 A CN 106763320A CN 201611155009 A CN201611155009 A CN 201611155009A CN 106763320 A CN106763320 A CN 106763320A
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- CN
- China
- Prior art keywords
- retarder
- pump
- air
- breather
- installation structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/08—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels using fluid or powdered medium
- B60T1/093—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels using fluid or powdered medium in hydrostatic, i.e. positive displacement, retarders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D57/00—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Braking Arrangements (AREA)
Abstract
The present invention relates to Machine Design manufacture field,Disclose a kind of Retarder independent installation structure,Include fixed beam,Connecting seat,Mounting bracket,This kind of mounting structure can be independently mounted between automotive frame and twopiece drive shaft connection,This mounting means is different from existing retarder mounting means,The existing Retarder of current home and abroad is arranged on automobile gearbox,It is required that being matched with gear box sub-case,It is required that drive axle have to be larger than on 450mm with odd-side distance,The distance between mode crossbeam width is particularly installed in parallel to necessarily require more than 750mm,And the application independent installation structure need not be connected with car connected mode with gear box sub-case,Drive axle is not needed with odd-side distance limitation,Big beam width can be installed in more than 500mm,This mounting structure solves a large amount of vehicles in home and abroad and can not install Retarder.The blank of Retarder both at home and abroad is compensate for, the life safety and property safety of all riders and driving has been ensured.
Description
Technical field
The present invention relates to Machine Design manufacture field, particularly a kind of Retarder independent installation structure.
Background technology
Retarder is also known as fluid power deceleration device.Automobile uses exhaust brake in lower long slope, although can receive good
Braking effect, but be limited using exhaust brake effect for the larger heavy vehicle of tonnage.Therefore, to being equipped with
The heavy vehicle of hydraulic mechanical is equipped with fluid power deceleration retarder.
Retarder is the decelerator of high capacity waggon, and be converted into for the kinetic energy of power transmission shaft by its agitation for passing through fluid
The interior energy of fluid, so as to be radiated by heat exchanger, reaches slow effect.When the fluid in fuel tank passes through pressure-air pressure
Then liquid is retarder work when entering working chamber, and when the pressure-air discharge in fuel tank, fluid is back to Retarder in fuel tank
It is stopped, and the fuel tank of the Retarder of prior art, when fluid is not enough, it will partial air is leaked to working chamber
It is interior, influence Retarder work.
The content of the invention
It is an object of the invention to provide a kind of Retarder independent installation structure, this structure can be independently mounted at vapour
Between crossbeam and twopiece drive shaft connection, this mounting means is different from existing retarder mounting means, and current home and abroad shows
There is Retarder to be arranged on automobile gearbox, it is desirable to be matched with gear box sub-case, it is desirable to drive axle and odd-side distance
Have to be larger than on 450mm, be particularly installed in parallel the distance between mode crossbeam width and necessarily require more than 750mm, and this Shen
Please independent installation structure need not be connected with gear box sub-case with car connected mode, it is not necessary to the distance limitation of drive axle and odd-side,
Big beam width can be installed in more than 500mm, this mounting structure solve a large amount of vehicles in home and abroad can not install fluid power delay
Fast device.The blank of Retarder both at home and abroad is compensate for, life safety and the property peace of all riders and driving has been ensured
Entirely.
To realize above-mentioned technical purpose, above-mentioned technique effect is reached, independently pacified the invention discloses a kind of Retarder
Assembling structure, Retarder includes Retarder lid, impeller pump driving wheel, stator pumps resistance wheel, splined shaft, Retarder
Housing, electromagnetic proportional valve and heat exchanger, mounting structure include fixed beam, connecting seat, mounting bracket, fixed beam middle part respectively with
Retarder lid and Retarder housing spiral shell fixed are fixed, and the two ends of fixed beam are connected with each other by connecting seat with mounting bracket
It is fixed.
Wherein, reinforcement is provided with fixed beam, mounting bracket includes preceding mounting bracket and rear mounting bracket, preceding installation branch
Frame is half frame bracket, and rear mounting bracket is "the" shape support, is one in front and one in back arranged on automotive frame during installation.
Wherein, Retarder uses hemispherical design, and Retarder housing includes working chamber and accumulator, fluid power
Retarder lid is mutually matched with Retarder housing and is attached fixation by fixing bolt, and stator pumps resistance wheel is arranged at liquid
In the working chamber of power retarder housing, impeller pump driving wheel is arranged in Retarder lid, and splined shaft is arranged at impeller pump and moves
Between wheel and stator pumps resistance wheel, mutually it is rotated by helicitic texture, electromagnetic proportional valve and heat exchanger are slow with fluid power respectively
The steam vent of fast device surface of shell is connected.
Wherein, impeller pump driving wheel includes pump driving wheel body, pump driving wheel blade and armature spindle, and armature spindle is arranged at pump driving wheel
The middle part of body, armature spindle inwall offers the helicitic texture matched with splined shaft, and pump driving wheel blade ring is around the rotor diameter of axle
To vertical or be obliquely installed in pump driving wheel inner body wall.
Wherein, stator pumps resistance wheel includes pump resistance wheel body, pump resistance impeller blade and connection sheet, is opened in the middle part of pump resistance wheel body
Manhole is provided with, pump resistance impeller blade is radially vertical around manhole or is obliquely installed in pump resistance wheel inner body wall, connects
The surrounding the week side of boss that piece is arranged at pump resistance wheel body is used for fixed stator pump resistance wheel.
Wherein, offer square fuel feed hole on pump resistance impeller blade, offer circular oil outlet on pump resistance wheel body, it is square enter
Oilhole and circular oil outlet form circulating oil path.
Preferably, also including air-breather and heat insulating damping device, the row of air-breather and Retarder surface of shell
Stomata is connected, and heat insulating damping device is arranged at the lower section of air-breather, and is connected with electromagnetic proportional valve, is provided with air-breather
Some groups of air passage structures.
Wherein, air-breather is rectangular configuration, and the upper surface of air-breather offers two groups of round holes and hydrodynamic retarding
Device housing is connected, and lower surface offers two groups of round holes and is connected with electromagnetic proportional valve, and the side of air-breather offers some
Individual round hole, is provided with two groups of exhaust ducts in air-breather, exhaust duct is by the upper surface round hole of air-breather and side
Round hole is mutually communicated, and forms air passage structure.
Wherein, two groups of receipts oil structures are provided with the accumulator of Retarder housing, oily structure and secondary receipts are once received
Oily structure, is once received oily structure and is designed using vertical through hole with working chamber connecting place, and the secondary oily structure of receipts is inverted Y-shaped passage knot
Structure, one end is connected with working chamber, and two ends are connected with oil storage room housing in addition, and the passage two ends being connected with oil storage room housing are adopted respectively
With inwardly open and open out design.
The invention has the advantages that：
The present invention passes through Optimal Structure Designing, it is proposed that one kind can be independently mounted between automotive frame and twopiece drive shaft connection
Retarder mounting structure, this mounting means is different from existing retarder mounting means, the existing liquid of current home and abroad
Power retarder is arranged on automobile gearbox, it is desirable to matched with gear box sub-case, it is desirable to which drive axle is with odd-side apart from necessary
Necessarily required more than 750mm more than the distance between mode crossbeam width on 450mm, is particularly installed in parallel, and the application is only
Vertical mounting structure need not be connected with car connected mode with gear box sub-case, it is not necessary to drive axle and odd-side distance limitation, to big
Beam width can be installed in more than 500mm, and this mounting structure solves a large amount of vehicles in home and abroad and can not install Retarder.
The blank of Retarder both at home and abroad is compensate for, the life safety and property safety of all riders and driving has been ensured.
Brief description of the drawings
Fig. 1 is overall structure diagram of the invention.
Fig. 2 is independent installation structure schematic diagram of the invention.
Fig. 3 is the structural representation of Retarder of the invention.
Fig. 4 is the structural representation of impeller pump driving wheel of the invention.
Fig. 5 is the structural representation of stator pumps resistance wheel of the invention.
Fig. 6 is the structural representation of Retarder housing of the invention.
Fig. 7 is the structural representation of air-breather of the invention.
Fig. 8 is the internal structure schematic diagram of air-breather of the invention.
Critical piece symbol description：
1：Retarder lid, 2：Pump driving wheel body, 3：Pump driving wheel blade, 4：Armature spindle, 5：Pump resistance wheel body, 6：Pump resistance wheel
Blade, 7：Connection sheet, 8：Square fuel feed hole, 9：Circular oil outlet, 10：Splined shaft, 11：Retarder housing, 12：Work
Chamber, 13：Accumulator, 14：Once receive oily structure, 15：It is secondary to receive oily structure, 16：Air-breather, 17：Heat insulating damping device, 18：
Electromagnetic proportional valve, 19：Heat exchanger, 20：Fixed beam, 21：Reinforcement, 22：Connecting seat, 23：Preceding mounting bracket, 24：After install
Support.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.
As shown in figures 1-8, the invention discloses a kind of Retarder independent installation structure, Retarder includes liquid
Power retarder lid 1, impeller pump driving wheel, stator pumps resistance wheel, splined shaft 10, Retarder housing 11, electromagnetic proportional valve 18, heat
Exchanger 19, air-breather 16 and heat insulating damping device 17.Mounting structure includes fixed beam 20, connecting seat 22, mounting bracket.
Retarder uses hemispherical design, and Retarder housing 11 includes working chamber 12 and accumulator 13, liquid
Power retarder lid 1 is mutually matched with Retarder housing 11 and is attached fixation by fixing bolt, and stator pumps resistance wheel sets
It is placed in the working chamber 12 of Retarder housing 11, impeller pump driving wheel is arranged in Retarder lid 1, splined shaft 10 sets
It is placed between impeller pump driving wheel and stator pumps resistance wheel, is mutually rotated by helicitic texture.Air-breather 16 and hydrodynamic retarding
The steam vent on the surface of device housing 11 is connected, and heat insulating damping device 17 is arranged at the lower section of air-breather 16, and and electromagnetic proportional valve
18 are connected, and some groups of air passage structures are provided with air-breather 16.Heat exchanger 19 and the row on the surface of Retarder housing 11
Stomata is connected.The middle part of fixed beam 20 is fixed with Retarder lid 1 and the spiral shell fixed of Retarder housing 11 respectively, fixed beam 20
Two ends be interconnected and fixed by connecting seat 22 and mounting bracket.
Impeller pump driving wheel includes pump driving wheel body 2, pump driving wheel blade 3 and armature spindle 4, and armature spindle 4 is arranged at pump driving wheel
The middle part of body 2, the inwall of armature spindle 4 offers the helicitic texture matched with splined shaft 10, and pump driving wheel blade 3 is around rotor
Axle is obliquely installed in the inwall of pump driving wheel body 2.
Stator pumps resistance wheel includes pump resistance wheel body 5, pump resistance impeller blade 6 and connection sheet 7, and the middle part of pump resistance wheel body 5 is opened
Manhole is provided with, pump hinders impeller blade 6 and is obliquely installed in the pump resistance wheel inwall of body 5 around manhole, and connection sheet 7 is arranged at
The surrounding the week side of boss of pump resistance wheel body 5 is used for fixed stator pump and hinders wheel.Square fuel feed hole 8, pump resistance wheel are offered on pump resistance impeller blade 6
Circular oil outlet 9 is offered on body 5, square fuel feed hole 8 and circular oil outlet 9 form circulating oil path.
Two groups of receipts oil structures are provided with the accumulator 13 of Retarder housing 11, oily structure 14 and secondary receipts are once received
Oily structure 15, is once received oily structure 14 and is designed using vertical through hole with the connecting place of working chamber 12, and the secondary oily structure 15 of receipts is inverted Y-shaped
Channel design, one end is connected with working chamber 12, and two ends are connected with the housing of accumulator 13 in addition, and what is be connected with the housing of accumulator 13 is logical
Road two ends are respectively adopted inwardly open and open out design.
Air-breather 16 is rectangular configuration, and the upper surface of air-breather offers two groups of round holes and Retarder shell
Body 11 is connected, and lower surface offers two groups of round holes and is connected with electromagnetic proportional valve 18, if the side of air-breather 16 offers
A dry round hole, is provided with two groups of exhaust ducts in air-breather 16, exhaust duct by the upper surface round hole of air-breather with
Side round hole is mutually communicated, and forms air passage structure.
Reinforcement 21 is provided with fixed beam 20, mounting bracket includes preceding mounting bracket 23 and rear mounting bracket 24, preceding peace
Dress support 23 is half frame bracket, and rear mounting bracket 24 is "the" shape support, is one in front and one in back arranged on automotive frame during installation.
Operation principle：
The application provides a kind of Retarder independent installation structure, and this structure can be independently mounted at automotive frame and double transmissions
Between axle connection, this mounting means is different from existing retarder mounting means, the existing Retarder peace of current home and abroad
On automobile gearbox, it is desirable to matched with gear box sub-case, it is desirable to which drive axle have to be larger than 450mm with odd-side distance
On, particularly it is installed in parallel the distance between mode crossbeam width and necessarily requires more than 750mm, and the application independent installation structure
Need not be connected with gear box sub-case with car connected mode, it is not necessary to drive axle and odd-side distance limitation, big beam width is existed
More than 500mm can be installed, and this mounting structure solves a large amount of vehicles in home and abroad and can not install Retarder.Compensate for state
The blank of interior international Retarder, has ensured the life safety and property safety of all riders and driving.
The application Retarder is improved by conventional fluid torque speed buffer structure, and skill is separated using rotor, stator
Art, considerably reduces empty damage when retarder is stopped.Design weight is light, produced torque power in unit mass
Greatly, bigger by 1/3 or so in the moment of torsion and power produced by unit mass than existing retarders all both at home and abroad, monnolithic case is adopted
Use hemispherical design, uniform force to improve retarder self-radiating effect, retarder performance is increased energetically, solve
There is height and makes the subject matter of retarder hydraulic performance decline in retarder device both at home and abroad at present.
Optimized for the structure of Retarder housing 11, using the oily structure 14 of once receipts and the oily structure 15 of secondary receipts,
Meet gas face to be designed using acute angle small arc-shaped, acute angle can make gas form vortex under high-speed impact, upset the flow direction of gas, increase
Aerating body and the collision frequency of resistance area, clash into oily more on the more resistance areas of number of times, and small arc-shaped design is to reduce resistance area
Smooth surface is formed, resistance area is more smooth to be unfavorable for oil recovery, and circular arc excessively smaller impact area is bigger, and the oil of recovery is also got over
Many, the oil being formed on striking face flow back into accumulator in self gravitation effect, or when being opened by retarder next time
Enter accumulator 13 with gas.So the oil vapour produced by retarder Medium Oil is carried out partially recycled, reduce Medium Oil
Evaporation, improve retarder use time and operating efficiency, back of the body gas face is so conducive to delaying using the design of orthodrome curved face type
Gas enters the speed of retarder when fast device works, and improves the retarder opening time, and collision separates the another of secondary oil-collecting device
It is individual to be characterised by playing reinforcement effect, increase housing performance and fatigue strength, the generation of safety traffic accident is reduced,
The life safety and material that improve the people are installed.Retarder device Medium Oil is produced in high temperature by secondary oil structure 15 of receiving
Oil vapour carried out more than 90% recovery, by test data, do not have it is secondary receive oily structure 15, automobile traveling 6 to
80000 kilometers, retarder just loses braking function, and reason is Medium Oil evaporation, and after secondary oil-collecting device is set, automobile can be with
To more than 150,000 kilometers, traveling milimeter number is more than doubled traveling, and retarder performance is improve greatly, is reduced slow
Change oil number of times and the oil changing interval of device, increased operating efficiency, while having saved cost.
The upper surface of air-breather 16 is connected with the air inlet of Retarder housing 11, lower surface and the outlet of electromagnetic proportional valve 18
Mouth connection, using three corners, 90 ° of designs, exhaust is in right angle flow velocity when retarder does not work for the air passage structure in air-breather
Can collide, now retarder gas continues toward the flowing of air flue direction, and the oil for separating generation in collision returns to retarder storage
Grease chamber 13, during by this passage by three right angle turns carry out three times collision separate, it is oily to retarder at high temperature with it is slow
The oil of fast device gas discharge is reclaimed, and increased retarder is service life and performance.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in,
Should all be included within the scope of the present invention.
Claims (9)
1. a kind of Retarder independent installation structure, described Retarder includes Retarder lid, impeller pump
Driving wheel, stator pumps resistance wheel, splined shaft, Retarder housing, electromagnetic proportional valve and heat exchanger, it is characterised in that described
Mounting structure includes fixed beam, connecting seat, mounting bracket, described fixed beam middle part respectively with Retarder lid and fluid power
Retarder housing spiral shell fixed is determined, and the two ends of fixed beam are interconnected and fixed by connecting seat with mounting bracket.
2. a kind of Retarder independent installation structure as claimed in claim 1, it is characterised in that：Set in described fixed beam
Reinforcement is equipped with, described mounting bracket includes preceding mounting bracket and rear mounting bracket, and described preceding mounting bracket is half frame branch
Frame, described rear mounting bracket is "the" shape support, is one in front and one in back arranged on automotive frame during installation.
3. a kind of Retarder independent installation structure as claimed in claim 1, it is characterised in that：Described Retarder
Using hemispherical design, described Retarder housing includes working chamber and accumulator, described Retarder lid
It is mutually matched with Retarder housing and fixation is attached by fixing bolt, described stator pumps resistance wheel is arranged at fluid power and delays
In the working chamber of fast device housing, described impeller pump driving wheel is arranged in Retarder lid, and described splined shaft is arranged at
Between impeller pump driving wheel and stator pumps resistance wheel, mutually it is rotated by helicitic texture, described electromagnetic proportional valve and heat exchange
Steam vent of the device respectively with Retarder surface of shell is connected.
4. a kind of Retarder independent installation structure as claimed in claim 1, it is characterised in that：Described impeller pump driving wheel
Pump driving wheel body, pump driving wheel blade and armature spindle are included, described armature spindle is arranged at the middle part of pump driving wheel body, armature spindle
Inwall offers the helicitic texture matched with splined shaft, and described pump driving wheel blade ring is vertical around rotor Axial and radial or inclines
It is arranged at pump driving wheel inner body wall.
5. a kind of Retarder independent installation structure as claimed in claim 1, it is characterised in that：Described stator pumps resistance wheel
Pump resistance wheel body, pump resistance impeller blade and connection sheet are included, manhole is offered in the middle part of described pump resistance wheel body, it is described
Pump hinder that impeller blade is radially vertical around manhole or be obliquely installed in pump resistance wheel inner body wall, described connection sheet is set
It is used for fixed stator pump in the surrounding the week side of boss of pump resistance wheel body and hinders wheel.
6. a kind of Retarder independent installation structure as claimed in claim 5, it is characterised in that：Described pump resistance impeller blade
On offer square fuel feed hole, offer circular oil outlet, described square fuel feed hole and circle on described pump resistance wheel body
Oil outlet forms circulating oil path.
7. a kind of Retarder independent installation structure as claimed in claim 1, it is characterised in that：Also include air-breather and
Heat insulating damping device, described air-breather is connected with the steam vent of Retarder surface of shell, described heat-insulating and shock-absorbing dress
The lower section for being placed in air-breather is installed, and is connected with electromagnetic proportional valve, some groups of air flue knots are provided with described air-breather
Structure.
8. a kind of Retarder independent installation structure as claimed in claim 7, it is characterised in that：Described air-breather is
Rectangular configuration, the upper surface of air-breather offers two groups of round holes and is connected with Retarder housing, and lower surface is offered
Two groups of round holes are connected with electromagnetic proportional valve, and the side of air-breather offers several round holes, described ventilation dress
Two groups of exhaust ducts are provided with putting, described exhaust duct is mutual with side round hole by the upper surface round hole of air-breather
Insertion, forms air passage structure.
9. a kind of Retarder independent installation structure as claimed in claim 1, it is characterised in that：Described Retarder
Two groups of receipts oil structures are provided with the accumulator of housing, oily structure and secondary receipts oil structure, described once receipts oil knot is once received
Structure is designed with working chamber connecting place using vertical through hole, and described secondary receipts oil structure is inverted Y-shaped channel design, one end and work
Chamber be connected, two ends are connected with oil storage room housing in addition, the passage two ends being connected with oil storage room housing be respectively adopted it is inwardly open and
Open out design.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611155009.5A CN106763320A (en) | 2016-12-14 | 2016-12-14 | A kind of Retarder independent installation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611155009.5A CN106763320A (en) | 2016-12-14 | 2016-12-14 | A kind of Retarder independent installation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106763320A true CN106763320A (en) | 2017-05-31 |
Family
ID=58888718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611155009.5A Pending CN106763320A (en) | 2016-12-14 | 2016-12-14 | A kind of Retarder independent installation structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106763320A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081098A (en) * | 2019-05-24 | 2019-08-02 | 苏州特速安机电科技有限公司 | A kind of fluid power deceleration device |
| CN110081097A (en) * | 2019-05-24 | 2019-08-02 | 苏州特速安机电科技有限公司 | A kind of fluid power deceleration device |
| CN114516267A (en) * | 2022-01-25 | 2022-05-20 | 河南力旭汽车零部件有限公司 | Axle support |
-
2016
- 2016-12-14 CN CN201611155009.5A patent/CN106763320A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081098A (en) * | 2019-05-24 | 2019-08-02 | 苏州特速安机电科技有限公司 | A kind of fluid power deceleration device |
| CN110081097A (en) * | 2019-05-24 | 2019-08-02 | 苏州特速安机电科技有限公司 | A kind of fluid power deceleration device |
| CN114516267A (en) * | 2022-01-25 | 2022-05-20 | 河南力旭汽车零部件有限公司 | Axle support |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170531 |
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| WD01 | Invention patent application deemed withdrawn after publication |