CN107084013A - Engine and its cam assembly - Google Patents
Engine and its cam assembly Download PDFInfo
- Publication number
- CN107084013A CN107084013A CN201710476881.8A CN201710476881A CN107084013A CN 107084013 A CN107084013 A CN 107084013A CN 201710476881 A CN201710476881 A CN 201710476881A CN 107084013 A CN107084013 A CN 107084013A
- Authority
- CN
- China
- Prior art keywords
- cam
- tappet
- center line
- camshaft
- face
- 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
- 238000005299 abrasion Methods 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000002679 ablation Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/08—Shape of cams
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
- F01L1/053—Camshafts overhead type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/14—Tappets; Push rods
- F01L1/16—Silencing impact; Reducing wear
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
- F01L1/053—Camshafts overhead type
- F01L2001/0537—Double overhead camshafts [DOHC]
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The invention discloses a kind of engine and its camshaft, including admission cam shaft and exhaust cam shaft, there is relative position relation between the cam and tappet of camshaft, wherein, the center line of tappet and the center line of cam are misaligned, and tappet is abutted with cam, as the cam shaft rotates, cam on camshaft can make tappet do reciprocating slip from top to bottom, simultaneously because cam be taper and cam center line and tappet center line it is misaligned, cam can also make tappet rotate when rotating.When in the application by carrying out structure arrangement in cylinder head, make the cam centre line and tappet center line of camshaft misaligned, cam is designed to micro- cone simultaneously, the rotation of camshaft, tappet can be made not only to do reciprocating slip from top to bottom, tappet can also be made to be rotated around tappet center line, the abrasion of cam and tappet top end face is reduced, make the service life of the circumferencial direction even wearing of tappet wall, extension cam and tappet simultaneously.
Description
Technical field
The present invention relates to technical field of engines, specifically, it is related to a kind of engine and its cam assembly.
Background technology
Camshaft is a part in reciprocating engine, and it is unlatching and the closed action for controlling valve that it, which is acted on,.It is convex
The contact stress between cam and tappet on wheel shaft is very big, and relative sliding velocity is also very high, therefore, the abrasion of cam working face
Than more serious.
Dual Over Head Camshaft is located in cylinder head directly drives valve by tappet.Increase in the middle of camshaft and valve and endure
Firmly, one tappet valve gap adjustment is can be by, two be increase and the contact area of camshaft, increases wearability, and reduction is strong
Degree, makes kinematic pair operation more longlasting.
The cam of camshaft is linear contact lay with tappet, and cam is slided on the end face on tappet top, in order to reduce S-CAM grinder
Damage and the end wear on tappet top, as the cam shaft rotates, it is necessary to which tappet is rotated by cam with the center line around tappet,
Reduce the sliding distance between cam and the end face on tappet top, make tappet top end wear uniform, reduce cam and tappet
The inordinate wear of the end face on top, while because tappet is rotated around tappet center line so that tappet outer wall and the tappet of cylinder head are pacified
Fill hole abrasion also uniform, extend the service life of camshaft, tappet and cylinder head.Mode typically now is by tappet top
It is the sphere to cam lobe, so, the depositing due to sphere when cam pushes tappet to be processed into micro- cydariform, i.e. tappet top
Downward power will decomposite a side force, to promote Tappet Rotation.The premise of above-mentioned realization is, the center line of cam
Center line with tappet is misaligned, therefore, it is ensured that decomposite side force.And at present generally by the center line of cam with enduring
The center line of post is designed to overlap, but the axial gap due to camshaft and the presence of machining tolerance, can there is the center of cam
It is misaligned but close to situation about overlapping with the center line of tappet, and do not have now side force (or cross component force angle too small, laterally
Power is not enough to promote Tappet Rotation), tappet can not be rotated, and aggravate abrasion, also result in the generation of the failures such as tappet ablation.
Therefore, how to ensure tappet stable rotation, and reduce abrasion, be the skill that those skilled in the art need to solve at present
Art problem.
The content of the invention
In view of this, the invention provides a kind of cam assembly, it is ensured that tappet stable rotation, and reduces abrasion.In addition,
Present invention also offers a kind of engine with above-mentioned cam assembly.
To achieve the above object, the present invention provides following technical scheme：
Camshaft including one-to-one tappet and with cam, the center of the center line of the tappet and the cam
Line is misaligned, wherein, when camshaft is admission cam shaft, the position of center line of two tappets is located at two cams
Between center line, and the distance of center line to the corresponding tappet center line of the cam is equal；When the camshaft
During for exhaust cam shaft, the position of center line of two tappets is located at outside two cam centre lines, and the cam
Center line to the corresponding tappet center line distance it is equal.
It is preferred that, in above-mentioned cam assembly, the top end face of the tappet is to the raised arc in the direction of the cam
Shape face, the cam is used for the inclination that the face that contact with the arcwall face has predetermined angle for the axis with the camshaft
Face, and the inclined plane with the arcwall face is tangent abuts.
It is preferred that, in above-mentioned cam assembly, the top end face of the tappet is pre- to have with the axis of the camshaft
If the inclined plane of angle, it is the arcwall face to tappet direction projection that the cam, which is used for the face that contact with the inclined plane,
And the inclined plane with the arcwall face is tangent abuts.
It is preferred that, in above-mentioned cam assembly, the arcwall face is arc surface.
It is preferred that, in above-mentioned cam assembly, in addition to for limit that the camshaft moves in the axial direction only
Pushing manipulation is blue.
It is preferred that, in above-mentioned cam assembly, the cam is two, and the cam is corresponded with the tappet
Arrangement, two cams are opposite with the center line offset direction of the corresponding tappet.
A kind of engine, including cam assembly, wherein, the cam assembly is the camshaft described in any of the above-described
Component.
It is preferred that, in above-mentioned engine, the tappet of the cam assembly is arranged on the tappet peace of engine cylinder cap
Fill in hole.
It is preferred that, in above-mentioned engine, the camshaft of the cam assembly is admission cam shaft or exhaust cam shaft.
It is preferred that, in above-mentioned engine, the admission cam shaft and the exhaust cam shaft are molded by same mould
It is made.
Understand that the invention discloses a kind of cam assembly, including admission cam shaft and row via above-mentioned technical scheme
Gas camshaft, has relative position relation between the cam and tappet of camshaft, when camshaft is admission cam shaft, two tappets
Position of center line be located between two cam centre lines, and the distance of center line to the corresponding tappet center line of cam is homogeneous
Deng；When camshaft is exhaust cam shaft, the position of center line of two tappets is located at outside two cam centre lines, and cam
The distance of center line to corresponding tappet center line is equal, and wherein the center line of tappet and the center line of cam are misaligned, very
Post is abutted with cam, as the cam shaft rotates, and the cam on camshaft can make tappet do reciprocating slip from top to bottom, together
When due to cam be taper and cam center line and tappet center line it is misaligned, cam can also revolve tappet when rotating
Transhipment is dynamic.When in the application by carrying out structure arrangement in cylinder head, make the cam centre line and tappet center line of camshaft
Misaligned, while cam is designed into micro- cone, the rotation of camshaft can make tappet not only do reciprocating cunning from top to bottom
It is dynamic, tappet can also be made to be rotated around tappet center line, the abrasion of cam and tappet top end face is reduced, while making tappet
The service life of the circumferencial direction even wearing of wall, extension cam and tappet.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is the structural representation of prior art cam provided in an embodiment of the present invention and tappet；
Fig. 2 is the structural representation of the first incline direction of cam assembly provided in an embodiment of the present invention；
Fig. 3 is the structural representation of second of incline direction of cam assembly provided in an embodiment of the present invention；
Fig. 4 for stretcher provided in an embodiment of the present invention push rod move down during partial schematic diagram.
Embodiment
The core of the present invention is to provide a kind of cam assembly, it is ensured that tappet stable rotation, and reduces abrasion.In addition, this
Another core of invention is to provide a kind of engine with above-mentioned cam assembly.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
As Figure 1-Figure 4, the invention discloses a kind of cam assembly, including tappet 2 and camshaft, wherein, tappet
Center line and cam 1 center line it is misaligned, tappet 2 is abutted with cam 1, with limit the center line of cam axial cam 1 with
The direction movement that the center line of tappet 2 is overlapped.When camshaft is admission cam shaft, the position of center line of two tappets 2 is located at
Between two center lines of cam 1, and the distance of center line to the corresponding center line of tappet 2 of cam 1 is equal；When camshaft is
During exhaust cam shaft, the position of center line of two tappets 2 is located at outside two center lines of cam 1, and cam 1 center line to pair
The distance for the center line of tappet 2 answered is equal, and wherein the center line of the center line and cam 1 of tappet 2 is misaligned, tappet 2 with it is convex
Wheel 1 is abutted, as the cam shaft rotates, and the cam 1 on camshaft can make tappet 2 do reciprocating slip from top to bottom, simultaneously
Due to cam 1 be taper and cam 1 center line and the center line of tappet 2 it is misaligned, cam 1 can also make tappet 2 when rotating
Rotate.When in the application by carrying out structure arrangement in cylinder head, make the center line of cam 1 and tappet 2 of camshaft
Center line is misaligned, while cam 1 is designed into micro- cone, the rotation of camshaft, and tappet 2 can be made not only to do from top to bottom past
Comlpex sliding, can also make tappet 2 be rotated around the center line of tappet 2, reduce the abrasion of cam 1 and the top end face of tappet 2,
Make the service life of the circumferencial direction even wearing of tappet wall, extension cam 1 and tappet 2 simultaneously.
By enabling tappet 2 to limit the movement of camshaft in the application, that is, the axial float of camshaft is prevented, makes cam
The center line of 1 center line and tappet 2 is misaligned all the time, it is to avoid the center line of cam 1 is overlapped with the center line of tappet 2 not to be had
Side force and occur the problem of cause tappet 2 not rotate, reduce abrasion.
The top end face of tappet 2 is to the raised arcwall face in the direction of cam 1, cam in cam assembly disclosed in the present application
1 face for being used to contact with arcwall face is inclined plane, and the axis of the inclined plane and camshaft has predetermined angle, and is tilted
Face with arcwall face is tangent abuts.By setting the abutting of arcwall face and inclined plane, the axial arcwall face peak of cam can be achieved
It is spacing that direction is moved, and because inclined plane is tangent with arcwall face so that the power that cam 1 is applied to tappet 2 has a side
To component, to ensure the rotation of tappet 2.Due to the limit method that inclined plane and arcwall face coordinate, can avoid in the course of work or
Person installs convexity wheel shaft axial float and makes the center of cam 1 and the center superposition of tappet 2.In practice, can for inclined plane
Tangent with the either side of arc surface, the angle of inclination for inclined plane can be 0.05 ° -0.12 °.
Similarly, the top end face of tappet 2 can be also set to inclined plane and the face that cam 1 is used to contact with the inclined plane is set
Arcwall face is set to, i.e., the position of arcwall face and inclined plane is exchanged, but its principle is as above, herein can be without detailed
Description.
In practice, also tappet 2 and cam 1 can be set to other limit methods, as long as ensure that in tappet 2 and convex
After wheel 1 is installed, under the center line and the misaligned state of center line of tappet 2 for ensureing cam 1, cam 1 will not axial float
.
It is preferred that, it is the most summit of arc surface, i.e. arc surface and the raised center line weight at place by above-mentioned arcwall face
Close or overlapped with the center line of the tappet 2 at place, convenient processing is so set, and can preferably ensure the center of projection 1
The relative motion of both generation axial directions of limitation when the center line of line and tappet 2 is misaligned.
In further embodiment, the cam assembly also includes being used to limit the thrust that camshaft is moved in the axial direction
Flange 3, wherein, the thrust flange 3 is connected with camshaft, and the thrust flange 3 is fixedly installed on motor body.
There are multiple cams 1, in order to reduce the abrasion of tappet 2, in practice each on camshaft disclosed herein
One tappet 2 of correspondence of cam 1, i.e., be applied to the power of tappet 2 by cam 1 by camshaft and assign on each tappet 2.
In practice, the number of cam 1 is two, accordingly, and the number of tappet 2 is also two, and two cams with
The center line offset direction of corresponding tappet on the contrary, i.e. when cam 1 is inclined plane, the incline directions of two inclined planes on the contrary,
As shown in Figures 2 and 3.
In addition, disclosed herein as well is a kind of engine, it includes cam assembly, wherein, the cam assembly is upper
The cam assembly disclosed in embodiment is stated, therefore, the engine with the cam assembly also has above-mentioned all technology effects
Really, this is no longer going to repeat them.
The tappet 2 of cam assembly disclosed herein is arranged in the tappet mounting hole of end cover of engine, in reality
In, then ensure that the center line of the center line and cam 1 of tappet 2 is misaligned when being installed for tappet 2, and cam 1 is applied to tappet 2
Side force be enough to rotate tappet 2.It ensure that for the center line of cam 1 with the distance of the centerline deviation of tappet 2
Tappet 2 can be configured on the premise of rotating according to the need for difference.
In further embodiment, the camshaft of above-mentioned cam assembly can be that admission cam shaft or exhaust are convex
Wheel shaft, by the improvement in above-described embodiment to cam 1, can make admission cam shaft identical with the structure of exhaust cam shaft, so
Admission cam shaft and exhaust cam shaft can be made to be processed into using the die sinking of same mould, reducing the number of mould reduces cost,
It can also improve processing efficiency simultaneously.
The embodiment of each in this specification is described by the way of progressive, and what each embodiment was stressed is and other
Between the difference of embodiment, each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope caused.
Claims (10)
1. a kind of cam assembly, including one-to-one tappet (2) and the camshaft with cam (1), the tappet (2)
Center line and the center line of the cam (1) are misaligned, it is characterised in that when camshaft is admission cam shaft, described in two
The position of center line of tappet (2) is located between two cam (1) center lines, and the cam (1) center line to correspondingly
The tappet (2) center line distance it is equal；When the camshaft is exhaust cam shaft, two tappets (2)
Position of center line is located at outside two cam (1) center lines, and the cam (1) center line to the corresponding tappet
(2) distance of center line is equal.
2. cam assembly according to claim 1, it is characterised in that the top end face of the tappet (2) is to described convex
The raised arcwall face in the direction of (1) is taken turns, the face that the cam (1) is used to contact with the arcwall face is the axle with the camshaft
Line has an inclined plane of predetermined angle, and the inclined plane with the arcwall face is tangent abuts.
3. cam assembly according to claim 1, it is characterised in that the top end face of the tappet (2) be with it is described convex
The axis of wheel shaft has the inclined plane of predetermined angle, and the face that the cam (1) is used to contact with the inclined plane is to be endured to described
The raised arcwall face in post (2) direction, and the inclined plane with the arcwall face is tangent abuts.
4. the cam assembly according to Claims 2 or 3, it is characterised in that the arcwall face is arc surface.
5. cam assembly according to claim 1, it is characterised in that also including for limiting the camshaft along axis
The thrust flange (3) of direction movement.
6. cam assembly according to claim 1, it is characterised in that two cams (1) with it is corresponding it is described very
The center line offset direction of post (2) is opposite.
7. a kind of engine, including cam assembly, it is characterised in that the cam assembly is as claim 1-6 is any
Cam assembly described in.
8. engine according to claim 7, it is characterised in that the tappet (2) of the cam assembly, which is arranged on, to be started
In the tappet mounting hole of machine cylinder head.
9. engine according to claim 7, it is characterised in that the camshaft of the cam assembly is admission cam shaft
Or exhaust cam shaft.
10. engine according to claim 9, it is characterised in that the admission cam shaft and the exhaust cam shaft are logical
Same mould die sinking is crossed to be made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710476881.8A CN107084013A (en) | 2017-06-21 | 2017-06-21 | Engine and its cam assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710476881.8A CN107084013A (en) | 2017-06-21 | 2017-06-21 | Engine and its cam assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107084013A true CN107084013A (en) | 2017-08-22 |
Family
ID=59606836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710476881.8A Pending CN107084013A (en) | 2017-06-21 | 2017-06-21 | Engine and its cam assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107084013A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223034A (en) * | 2018-02-07 | 2018-06-29 | 广西玉柴机器股份有限公司 | Band with type step camshaft structure |
| CN110159381A (en) * | 2019-06-29 | 2019-08-23 | 潍柴动力股份有限公司 | A kind of cam tappet component, valve distribution mechanism and engine |
| CN113236392A (en) * | 2021-05-31 | 2021-08-10 | 河北华北柴油机有限责任公司 | High-wear-resistance composite tappet for water-cooled diesel engine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1540150A (en) * | 2003-04-22 | 2004-10-27 | 日产自动车株式会社 | Rotary detecting structure of camshaft |
| CN1734064A (en) * | 2004-08-03 | 2006-02-15 | 株式会社日立制作所 | Valve lifter and forming and processing method therefor |
| CN101542078A (en) * | 2006-11-28 | 2009-09-23 | 丰田自动车株式会社 | Variable valve gear |
| JP2015206283A (en) * | 2014-04-18 | 2015-11-19 | 三菱自動車工業株式会社 | Valve train structure of engine |
| JP2016014351A (en) * | 2014-07-02 | 2016-01-28 | 三菱自動車工業株式会社 | Engine valve gear structure |
| CN106368756A (en) * | 2016-08-30 | 2017-02-01 | 安徽全柴动力股份有限公司 | Engine tappet, camshaft and transmission mechanism of engine tappet and camshaft |
| CN206845253U (en) * | 2017-06-21 | 2018-01-05 | 浙江春风动力股份有限公司 | Engine and its cam assembly |
-
2017
- 2017-06-21 CN CN201710476881.8A patent/CN107084013A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1540150A (en) * | 2003-04-22 | 2004-10-27 | 日产自动车株式会社 | Rotary detecting structure of camshaft |
| CN1734064A (en) * | 2004-08-03 | 2006-02-15 | 株式会社日立制作所 | Valve lifter and forming and processing method therefor |
| CN101542078A (en) * | 2006-11-28 | 2009-09-23 | 丰田自动车株式会社 | Variable valve gear |
| JP2015206283A (en) * | 2014-04-18 | 2015-11-19 | 三菱自動車工業株式会社 | Valve train structure of engine |
| JP2016014351A (en) * | 2014-07-02 | 2016-01-28 | 三菱自動車工業株式会社 | Engine valve gear structure |
| CN106368756A (en) * | 2016-08-30 | 2017-02-01 | 安徽全柴动力股份有限公司 | Engine tappet, camshaft and transmission mechanism of engine tappet and camshaft |
| CN206845253U (en) * | 2017-06-21 | 2018-01-05 | 浙江春风动力股份有限公司 | Engine and its cam assembly |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223034A (en) * | 2018-02-07 | 2018-06-29 | 广西玉柴机器股份有限公司 | Band with type step camshaft structure |
| CN110159381A (en) * | 2019-06-29 | 2019-08-23 | 潍柴动力股份有限公司 | A kind of cam tappet component, valve distribution mechanism and engine |
| CN113236392A (en) * | 2021-05-31 | 2021-08-10 | 河北华北柴油机有限责任公司 | High-wear-resistance composite tappet for water-cooled diesel engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107084013A (en) | Engine and its cam assembly | |
| US9321140B2 (en) | System for machine grinding a crankshaft | |
| CN206845253U (en) | Engine and its cam assembly | |
| US9046011B2 (en) | Cam element for a valve drive train device | |
| CN105625439A (en) | Milling wheel with hinged swinging teeth and slot milling machine | |
| CN106944524A (en) | Monoblock type self-lubricating knuckle bearing spin forming method | |
| JP3890560B2 (en) | Crankshaft and engine | |
| CN102555863B (en) | Central armrest of back-row seat of automobile | |
| CN106368756A (en) | Engine tappet, camshaft and transmission mechanism of engine tappet and camshaft | |
| CN205908320U (en) | A concave spherical surface circular arc cam structure for engine cam drive | |
| CN104481622A (en) | Roller-free valve rocker and machining method thereof | |
| CN203926356U (en) | Bent axle | |
| CN102229112B (en) | Finishing method of grinding wheel for grinding angular contact type bearing channel | |
| CA1163861A (en) | High-torque hydraulic motor | |
| CN102434522A (en) | Hydraulic cylinder for adjusting axial position of piston and cylinder body through spherical surface | |
| CN104279014A (en) | Novel anti-rotation rolling wheel ascending and descending tappet | |
| CN204552856U (en) | A kind of combined type selflubricating titanium alloy camshaft | |
| CN104329217B (en) | Flexible tilt cylinder type hydraulic motor and the processing method of eccentric spherical thereof | |
| CN2913590Y (en) | Error correctable directional smooth rod sealing device for oil field pumping unit with sucker rod | |
| CN201448368U (en) | Self complementary zero clearance sliding bearing | |
| KR20160093005A (en) | Adjustable camshaft | |
| CN202326500U (en) | Hydraulic cylinder device capable of adjusting positions of piston and axis of cylinder body by using spherical surface | |
| CN208153080U (en) | Band with type step camshaft structure and engine | |
| CN108302122A (en) | Self-aligning roller bearing | |
| CN105257525B (en) | A kind of pump rocker resetting-mechanism |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170822 |