CN108426032A - A kind of engine piston - Google Patents
A kind of engine piston Download PDFInfo
- Publication number
- CN108426032A CN108426032A CN201810449582.XA CN201810449582A CN108426032A CN 108426032 A CN108426032 A CN 108426032A CN 201810449582 A CN201810449582 A CN 201810449582A CN 108426032 A CN108426032 A CN 108426032A
- Authority
- CN
- China
- Prior art keywords
- piston
- pin
- connection cover
- ring
- annular groove
- 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.)
- Pending
Links
- 238000005461 lubrication Methods 0.000 claims abstract description 15
- 230000006835 compression Effects 0.000 claims abstract description 5
- 238000007906 compression Methods 0.000 claims abstract description 5
- 238000003780 insertion Methods 0.000 claims abstract description 4
- 230000037431 insertion Effects 0.000 claims abstract description 4
- 239000012530 fluid Substances 0.000 claims description 4
- 239000006185 dispersion Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 239000003921 oil Substances 0.000 abstract description 31
- 239000010721 machine oil Substances 0.000 abstract description 6
- 230000035939 shock Effects 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Classifications
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/08—Constructional features providing for lubrication
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/10—Connection to driving members
- F16J1/14—Connection to driving members with connecting-rods, i.e. pivotal connections
- F16J1/16—Connection to driving members with connecting-rods, i.e. pivotal connections with gudgeon-pin; Gudgeon-pins
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/10—Connection to driving members
- F16J1/14—Connection to driving members with connecting-rods, i.e. pivotal connections
- F16J1/20—Connection to driving members with connecting-rods, i.e. pivotal connections with rolling contact, other than in ball or roller bearings
Abstract
The present invention discloses a kind of engine piston, including piston only, the piston only outer upper is equipped with compression ring, oil ring successively, position is equipped with pin hole among the piston only both sides, the piston only is equipped with bottom annular groove, the piston only is equipped with the back oil road of connection bottom annular groove and pin hole, piston pin is equipped in the pin hole, the piston pin insertion is connected in piston only, the piston pin is equipped with connecting rob bushing, connecting rod is cased on the outside of the connecting rob bushing, the connecting rod lower part is equipped with upper connection cover, and the upper connection cover lower part is equipped with lower connection cover.The present invention is equipped with the back oil road of connection bottom annular groove and pin hole on piston only, machine oil extra on cylinder wall can be scraped off by external oil ring and between guide pin hole and piston pin, pin hole and piston pin are lubricated, improve greasy property, piston pin is additionally provided with grid groove and lubrication groove simultaneously, further improves the performance of lubrication.
Description
Technical field
The present invention relates to technical field of engines more particularly to a kind of engine pistons.
Background technology
Piston is automobile engine " heart ", bears the mechanical load and thermic load of alternation, is the item that works in engine
The function of one of worst key components and parts of part, piston is subject to gas pressure, and is transmitted to connecting rod by piston pin and drives song
Axis rotates, the component part of top land or combustion chamber, when piston is moved up and down, under normal circumstances, compound oil ring
Machine oil extra on cylinder wall can be scraped off and flow back to oil sump, however existing engine piston is splashed generally by lubricating oil
The effect of penetrating lubricates pin hole and piston pin, but the regularity that when fluid concussion is sprung up sputters is poor, it is difficult to ensure to pin hole and work
The lubricating action of plug pin, and the piston pin both ends outer wall of existing engine piston can be produced with pin hole when crankshaft-link rod works
Raw friction, the gap increase of the two over time, to influence the normal operation of engine, while the prior art is for engine
Operating frequency technology it is also less perfect, cause relatively low in piston slap cylinder process frequency so that vehicle power hoisting effect
Bad, therefore, a kind of engine piston of present invention proposition is to solve problems of the prior art.
Invention content
In view of the above-mentioned problems, the present invention proposes a kind of engine piston, the piston only be equipped with connection bottom annular groove with
The back oil road of pin hole, can by external oil ring by machine oil extra on cylinder wall scrape off and guide pin hole and piston pin it
Between, pin hole and piston pin are lubricated, improve greasy property, while piston pin is additionally provided with grid groove and lubrication groove, further
Improve the performance of lubrication.
To solve the above-mentioned problems, the present invention proposes a kind of engine piston, including piston only, outside the piston only
Upper lateral part is equipped with compression ring, oil ring successively, and position is equipped with pin hole among the piston only both sides, and the piston only is equipped with bottom
Portion's annular groove, the piston only are equipped with the back oil road of connection bottom annular groove and pin hole, and piston pin is equipped in the pin hole, described
Piston pin insertion is connected in piston only, and the piston pin is equipped with connecting rob bushing, and connecting rod is cased on the outside of the connecting rob bushing,
The connecting rod lower part is equipped with upper connection cover, and the upper connection cover lower part is equipped with lower connection cover.
Further improvement lies in that：The pin hole hole wall corresponds to back oil road lower end and is used for what fluid disperseed equipped with what is radially extended out
Oil groove, the depth of the back oil road is divided to be more than the depth of oil ring.
Further improvement lies in that：Both ends are equipped with grid groove on the outside of the piston pin, if being equipped between grid groove described in two groups
Dry inclined lubrication groove.
Further improvement lies in that：The piston pin both ends are equipped with pressure ring, are all had in the both ends of the surface of the piston pin and are in
The interconnecting piece of cylindrical shape protrusion, each interconnecting piece are surrounded by annular groove.
Further improvement lies in that：The annular groove and interconnecting piece are coaxial, and the pressure ring is equipped with fixing bolt and annular
Groove connects, and rubber pad is provided on the fixing bolt.
Further improvement lies in that：High-efficiency bearing device, the efficient axis are equipped between the upper connection cover and lower connection cover
Bearing apparatus is made of high speed retainer, spherical roller, outer ring, deadening inner ring, and spherical roller is equipped on the outside of the high speed retainer,
It is equipped with outer ring on the outside of the spherical roller, is equipped on the inside of the high speed retainer and deadens inner ring.
Further improvement lies in that：The upper connection cover and lower connection cover both sides are equipped with bolt hole, are set in the bolt hole
There are connection bolt, the bolt hole of the lower connection cover both sides to be matched equipped with nut with bolt is connect, the bolt hole is under
Connection cover is integrated.
Beneficial effects of the present invention are：The piston only is equipped with the back oil road of connection bottom annular groove and pin hole, can pass through
Machine oil extra on cylinder wall is scraped off and between guide pin hole and piston pin by external oil ring, is carried out to pin hole and piston pin
Lubrication improves greasy property, while piston pin is additionally provided with grid groove and lubrication groove, further improves the performance of lubrication, and
Rubber pad is arranged in the engine piston between pressure ring and piston pin, and rubber pad can be absorbed by the flexible deformation of itself
The vibrations generated when rubbing effectively avoid the vibrations from moving on fixing bolt, improve the stability that pressure ring is connect with ontology,
The structural stability for improving piston pin, to ensure that the normal operation of engine, and the engine piston high-efficiency bearing fills
The deadening inner ring set can reduce the frictional force of drive shaft turns generation, by high-precision spherical roller with drive shaft one
Rotation is played, high speed retainer is driven to be rotated, allows the shock that piston carries out high speed to generate automobile power, shock can be increased
The power of generation reduces the loss of driving Process Energy, improves the highly efficient power of automobile power.
Description of the drawings
Fig. 1 is sectional view of the present invention.
Fig. 2 is side view of the present invention.
Fig. 3 is inventive piston pin outside drawing.
Fig. 4 is high-efficiency bearing apparatus structure schematic diagram of the present invention.
Wherein：1- piston onlies, 2- compression rings, 3- oil rings, 4- pin holes, the bottoms 5- annular groove, 6- back oil roads, 7- piston pins, 8-
Connecting rod, the upper connection covers of 9-, connection cover under 10-, 11- divide oil groove, 12- grid grooves, 13- lubrication grooves, 14- pressure rings, 15- interconnecting pieces,
16- annular grooves, 17- fixing bolts, 18- rubber pads, 19- bolts hole, 20- connection bolts, 21- nuts, 22- high-efficiency bearings dress
It sets, 23- high speed retainers, 24- spherical rollers, the outer rings 25-, 26- deadens inner ring.
Specific implementation mode
In order to deepen the understanding of the present invention, the present invention is further described below in conjunction with embodiment, the present embodiment
It is only used for explaining the present invention, be not intended to limit the scope of the present invention..
According to Fig. 1,2,3,4, a kind of engine piston, including piston only 1, the piston are present embodiments provided
1 outer upper of ontology is equipped with compression ring 2, oil ring 3 successively, and position is equipped with pin hole 4, the piston among 1 both sides of the piston only
Ontology 1 is equipped with bottom annular groove 5, and the piston only 1 is equipped with the back oil road 6 of connection bottom annular groove 5 and pin hole 4, the pin
Piston pin 7 is equipped in hole 4, the insertion of the piston pin 7 is connected in piston only 1, and the piston pin 7 is equipped with connecting rob bushing,
Connecting rod 8 is cased on the outside of the connecting rob bushing, 8 lower part of the connecting rod is equipped with upper connection cover 9, and 9 lower part of upper connection cover is equipped with down
Connection cover 10,4 hole wall of the pin hole correspond to 6 lower end of back oil road and divide oil groove 11, institute for fluid dispersion equipped with what is radially extended out
The depth for stating back oil road 6 is more than the depth of oil ring 3, and 7 outside both ends of the piston pin are equipped with grid groove 12, grid groove described in two groups
Several inclined lubrication grooves 13 are equipped between 12,7 both ends of the piston pin are equipped with pressure ring 14, the both ends of the piston pin 7
The interconnecting piece 15 of cylindrical protrusion is all had on face, each interconnecting piece 15 is surrounded by annular groove 16, the ring
Connected in star 16 and interconnecting piece 15 are coaxial, and the pressure ring 14 is connect equipped with fixing bolt 17 with annular groove 16, the fixed spiral shell
Rubber pad 18 is provided on bolt 17, the upper connection cover 9 and lower 10 both sides of connection cover are equipped with bolt hole 19, the bolt hole 19
Interior to be equipped with connection bolt 20, the bolt hole 19 of 10 both sides of lower connection cover is matched equipped with nut 21 with bolt 20 is connect,
The bolt hole 19 is integrated with lower connection cover 10, and efficient axis is equipped between the upper connection cover 9 and lower connection cover 10
Bearing apparatus 22, the high-efficiency bearing device 22 are made of high speed retainer 23, spherical roller 24, outer ring 25, deadening inner ring 26, institute
It states 23 outside of high speed retainer and is equipped with spherical roller 24,24 outside of the spherical roller is equipped with outer ring 25, the high speed retainer
23 insides, which are equipped with, deadens inner ring 26.
The piston only 1 is equipped with the back oil road 6 of connection bottom annular groove 5 and pin hole 4, can be by the oil ring 3 of outside by gas
Extra machine oil is scraped off and between guide pin hole 4 and piston pin 7, is lubricated to pin hole 4 and piston pin 7 on casing wall, is improved
Greasy property, while piston pin 7 is additionally provided with grid groove 12 and lubrication groove 13, further improves the performance of lubrication, and the hair
Motivation piston is arranged rubber pad 18 between pressure ring 14 and piston pin 7, and rubber pad 18 can by the flexible deformation of itself come
The vibrations that absorption generates when rubbing, effectively avoid the vibrations from moving on fixing bolt 17, improve pressure ring 14 and are connect with ontology
Stability, improve piston pin 7 structural stability, to ensure that the normal operation of engine, and the engine piston
Deadening inner ring 26 on high-efficiency bearing device 22 can reduce the frictional force of drive shaft turns generation, by high-precision spherical roller
24 rotate together with drive shaft, and high speed retainer 23 is driven to be rotated, and the shock that piston carries out high speed is allowed to generate vapour
Vehicle power can increase the power for hitting and generating, and reduce the loss of driving Process Energy, improve the efficient work(of automobile power.
In use, machine oil extra on cylinder wall is scraped off simultaneously guide pin hole 4 and piston pin 7 by external oil ring 3
Between, cooperation back oil road 6 divides oil groove 11, is lubricated to pin hole 4 and piston pin 7, improves greasy property, while piston pin 7 is naked
The grid groove 12 of the outer surface of dew can make the lubricating oil of splashing preferably be attached to 7 surface of piston pin, reciprocal with piston
Movement, is attached to lubricating oil in grid groove 12 and gradually merges into lubrication groove 13 and form oil in piston pin 7 and 8 junction of connecting rod before
Film achievees the purpose that lubrication, and when piston is moved up and down, rubber pad 18 can be absorbed interior by the flexible deformation of itself
The vibrations generated when portion rubs effectively avoid the vibrations from moving on fixing bolt 17, improve the stable structure of piston pin 7
Property, the normal operation of engine is ensure that, then in engine start by driving the high-speed rotation of active to drive efficiently
Bearing arrangement 22 is rotated, and the frictional force of drive shaft turns generation can be reduced by deadening inner ring 26, be rolled by high-precision spherical surface
Son 24 is rotated together with drive shaft, and high speed retainer 23 is driven to be rotated, and the shock that piston carries out high speed is allowed to generate
Automobile power, outer ring 25 can protect internal equipment damage.
Claims (7)
1. a kind of engine piston, it is characterised in that：Including piston only（1）, the piston only（1）Outer upper is set successively
There is compression ring（2）, oil ring（3）, the piston only（1）Position is equipped with pin hole among both sides（4）, the piston only（1）On set
There is bottom annular groove（5）, the piston only（1）It is equipped with connection bottom annular groove（5）With pin hole（4）Back oil road（6）, the pin
Hole（4）It is interior to be equipped with piston pin（7）, the piston pin（7）Insertion is connected to piston only（1）It is interior, the piston pin（7）It is equipped with
Connecting rob bushing, the connecting rob bushing outside are cased with connecting rod（8）, the connecting rod（8）Lower part is equipped with upper connection cover（9）, the upper company
Connect lid（9）Lower part is equipped with lower connection cover（10）.
2. a kind of engine piston according to claim 1, it is characterised in that：The pin hole（4）Hole wall corresponds to back oil road
（6）Oil groove is divided in lower end equipped with what is radially extended out for fluid dispersion（11）, the back oil road（6）Depth be more than oil ring（3）
Depth.
3. a kind of engine piston according to claim 1, it is characterised in that：The piston pin（7）Outside both ends are equipped with
Grid groove（12）, grid groove described in two groups（12）Between be equipped with several inclined lubrication grooves（13）.
4. a kind of engine piston according to claim 1, it is characterised in that：The piston pin（7）Both ends are equipped with pressure
Ring（14）, the piston pin（7）Both ends of the surface on all have the interconnecting piece of cylindrical protrusion（15）, each interconnecting piece
（15）Be surrounded by annular groove（16）.
5. a kind of engine piston according to claim 4, it is characterised in that：The annular groove（16）With interconnecting piece
（15）Coaxially, the pressure ring（14）It is equipped with fixing bolt（17）With annular groove（16）Connection, the fixing bolt（17）On
It is provided with rubber pad（18）.
6. a kind of engine piston according to claim 1, it is characterised in that：The upper connection cover（9）With lower connection cover
（10）Both sides are equipped with bolt hole（19）, the bolt hole（19）It is interior to be equipped with connection bolt（20）, the lower connection cover（10）Two
The bolt hole of side（19）It is equipped with nut（21）With connect bolt（20）It matches, the bolt hole（19）With lower connection cover（10）
It is integrated.
7. a kind of engine piston according to claim 1, it is characterised in that：The upper connection cover（9）With lower connection cover
（10）Between be equipped with high-efficiency bearing device（22）, the high-efficiency bearing device（22）By high speed retainer（23）, spherical roller
（24）, outer ring（25）, deaden inner ring（26）Composition, the high speed retainer（23）Outside is equipped with spherical roller（24）, the ball
Face roller（24）Outside is equipped with outer ring（25）, the high speed retainer（23）Inside, which is equipped with, deadens inner ring（26）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810449582.XA CN108426032A (en) | 2018-05-11 | 2018-05-11 | A kind of engine piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810449582.XA CN108426032A (en) | 2018-05-11 | 2018-05-11 | A kind of engine piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108426032A true CN108426032A (en) | 2018-08-21 |
Family
ID=63162859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810449582.XA Pending CN108426032A (en) | 2018-05-11 | 2018-05-11 | A kind of engine piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108426032A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113898492A (en) * | 2021-10-09 | 2022-01-07 | 常州中车柴油机零部件有限公司 | Large-cylinder-diameter forged steel piston and manufacturing method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101715512A (en) * | 2007-04-10 | 2010-05-26 | 费德罗-莫格尔公司 | Piston with pin bore lubrication features |
| US20110139114A1 (en) * | 2007-08-24 | 2011-06-16 | Honda Motor Co., Ltd. | Piston for an internal combustion engine |
| WO2014012293A1 (en) * | 2012-07-16 | 2014-01-23 | 东风汽车有限公司 | Internal-combustion engine connecting rod having hard base and soft structure |
| CN203809675U (en) * | 2014-04-24 | 2014-09-03 | 边财浪 | Piston pin of engine |
| CN104533654A (en) * | 2014-11-28 | 2015-04-22 | 重庆小康工业集团股份有限公司 | Engine piston |
| CN205446688U (en) * | 2016-04-07 | 2016-08-10 | 王攀 | Engine piston pin |
| CN206874379U (en) * | 2017-07-13 | 2018-01-12 | 湖州锐狮标准件制造有限公司 | A kind of piston of automobile engine pin |
| CN107806514A (en) * | 2017-11-29 | 2018-03-16 | 瑞安市创泰活塞制造有限公司 | A kind of engine piston |
| CN208686953U (en) * | 2018-05-11 | 2019-04-02 | 南京世界村汽车动力有限公司 | A kind of engine piston |
-
2018
- 2018-05-11 CN CN201810449582.XA patent/CN108426032A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101715512A (en) * | 2007-04-10 | 2010-05-26 | 费德罗-莫格尔公司 | Piston with pin bore lubrication features |
| US20110139114A1 (en) * | 2007-08-24 | 2011-06-16 | Honda Motor Co., Ltd. | Piston for an internal combustion engine |
| WO2014012293A1 (en) * | 2012-07-16 | 2014-01-23 | 东风汽车有限公司 | Internal-combustion engine connecting rod having hard base and soft structure |
| CN203809675U (en) * | 2014-04-24 | 2014-09-03 | 边财浪 | Piston pin of engine |
| CN104533654A (en) * | 2014-11-28 | 2015-04-22 | 重庆小康工业集团股份有限公司 | Engine piston |
| CN205446688U (en) * | 2016-04-07 | 2016-08-10 | 王攀 | Engine piston pin |
| CN206874379U (en) * | 2017-07-13 | 2018-01-12 | 湖州锐狮标准件制造有限公司 | A kind of piston of automobile engine pin |
| CN107806514A (en) * | 2017-11-29 | 2018-03-16 | 瑞安市创泰活塞制造有限公司 | A kind of engine piston |
| CN208686953U (en) * | 2018-05-11 | 2019-04-02 | 南京世界村汽车动力有限公司 | A kind of engine piston |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113898492A (en) * | 2021-10-09 | 2022-01-07 | 常州中车柴油机零部件有限公司 | Large-cylinder-diameter forged steel piston and manufacturing method thereof |
| CN113898492B (en) * | 2021-10-09 | 2024-03-29 | 常州中车柴油机零部件有限公司 | Large-cylinder-diameter forged steel piston and manufacturing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9051971B2 (en) | Oil-mist-free and high-speed electric spindle | |
| CN107110021A (en) | A kind of novel air pressing transmission device | |
| CN201568440U (en) | Engine crankshaft | |
| CN208686953U (en) | A kind of engine piston | |
| CN108426032A (en) | A kind of engine piston | |
| JPS62501987A (en) | piston | |
| CN110230660A (en) | Damping device and engine system | |
| CN204627686U (en) | generator lubrication system | |
| CN203770579U (en) | Combined gear structure | |
| CN103174742A (en) | Joint bearing system of automobile damper | |
| CN109253260A (en) | A kind of oil sealing arrangement of the gas turbine with flag-shaped slot rotating ring | |
| CN201330792Y (en) | Connecting rod of gasoline engine | |
| CN208831246U (en) | A kind of vibration-proof structure and the compressor with it | |
| CN207750324U (en) | The swelling centering machine of coating machine | |
| CN201944103U (en) | Crank shaft | |
| CN202483827U (en) | Track rotating type reciprocating piston compressor | |
| CN213808484U (en) | Bearing with shock attenuation effect | |
| CN204140308U (en) | Reciprocal compressor and there is its refrigerator | |
| CN101289962A (en) | Fuel-economizing internal-combustion engines crank-connecting rod mechanism | |
| CN201013750Y (en) | Magnetic bearing | |
| CN206830759U (en) | A kind of hanging belt conveys reductor | |
| CN219366126U (en) | Self-lubricating crankshaft connecting rod assembly | |
| CN201326527Y (en) | Radial equispaced multi-connected reciprocating pump of vertical eccentric shaft | |
| CN212615942U (en) | Hydraulic power-assisted clutch release bearing device | |
| CN216044392U (en) | Rotor-crankshaft structure and compressor |
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 |