CN106870045A - A kind of cam structure - Google Patents
A kind of cam structure Download PDFInfo
- Publication number
- CN106870045A CN106870045A CN201510933131.XA CN201510933131A CN106870045A CN 106870045 A CN106870045 A CN 106870045A CN 201510933131 A CN201510933131 A CN 201510933131A CN 106870045 A CN106870045 A CN 106870045A
- Authority
- CN
- China
- Prior art keywords
- axostylus axostyle
- cam
- oilhole
- locating slot
- offers
- 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
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
- F01L1/047—Camshafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
- F01M9/10—Lubrication of valve gear or auxiliaries
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
- F01M9/10—Lubrication of valve gear or auxiliaries
- F01M9/101—Lubrication of valve gear or auxiliaries of cam surfaces
-
- 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
- F01L2001/0471—Assembled camshafts
- F01L2001/0473—Composite camshafts, e.g. with cams or cam sleeve being able to move relative to the inner camshaft or a cam adjusting rod
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 cam structure, including axostylus axostyle and axostylus axostyle core；Axostylus axostyle set is provided with axostylus axostyle, axostylus axostyle puts and is provided with internal thread；The center line covered along axostylus axostyle offers axis hole, the outer wall of axostylus axostyle set offers the first locating slot, the outer wall of axostylus axostyle set radially offers the first oil groove, the first oilhole is provided with first oil groove, first oilhole is communicated with axis hole, and shaft rod upper sleeve is provided with the Sealing shield ring present invention has easily replacing, convenient maintenance, increase the service life, the beneficial effect such as reduces cost.
Description
Technical field
The present invention relates to a kind of camshaft structure.
Background technology
Existing engine combustion process mainly includes air inlet, compression, power and exhaust, wherein, air inlet is piston
Bottom dead centre is come downwards to from top dead-centre, air intake valve 51 is opened, and drain tap 52 is closed, now, cylinder 5
Interior generation part negative pressure of vacuum, gas-air mixture is sucked in cylinder 5；Compression travel, piston
Top dead-centre is gone upward to from bottom dead centre, now air valve is closed, air bleeding valve is opened, the waste gas burnt in cylinder 5,
In air being drained into through drain tap 52；Switched between control its air intake valve 51 of engine and drain tap 52
Main element is camshaft, existing camshaft it is main on axostylus axostyle integrally formed with admission cam and exhaust cam,
It is in contact with the Rocker arm 5 11 respectively with air intake valve 51 and drain tap 52, makes admission cam and be vented convex
Wheel forms certain stagger angle and sets up, and has reached control air inlet, the opening and closing of drain tap 52, by
In the admission cam on existing camshaft extremely exhaust cam it is integrally formed with axostylus axostyle, therefore is staggered between the two
Angle is in fixing shape, when engine exploitation is carried out, it is necessary to make entering for different various different offset angular specifications
Gas cam and exhaust cam, it is relatively costly；In addition, existing camshaft structure, its admission cam be vented it is convex
Wheel is integrally formed on axostylus axostyle, and when camshaft, admission cam, exhaust cam or axostylus axostyle, any one is damaged
Bad when, camshaft just will be changed entirely, reduce the service life of whole camshaft.
Therefore those skilled in the art are devoted to developing a kind of camshaft of reduces cost.
The content of the invention
In view of the drawbacks described above of prior art, the technical problems to be solved by the invention are that exploitation is a kind of to be reduced
The camshaft of cost.
To achieve the above object, the invention provides a kind of cam structure of offer, including axostylus axostyle and axostylus axostyle core；
Axostylus axostyle set is provided with axostylus axostyle；The center line covered along axostylus axostyle offers axis hole, and the outer wall of axostylus axostyle set offers the
One locating slot, the outer wall of axostylus axostyle set radially offers the first oil groove, and the first oilhole is provided with the first oil groove,
First oilhole is communicated with axis hole, and shaft rod upper sleeve is provided with Sealing shield ring；
Axostylus axostyle set is arranged with the first cam, spacer ring and the second cam successively from top to bottom；Outside first cam
Wall offers the second oilhole, and the inwall of the first cam offers several the second locating slots, the first locating slot with
The first alignment pin is provided between second locating slot, the first cam is axially disposed the first damping hole, first
Damping hole is communicated with the second oilhole；
The second damping hole is provided with second cam, the inwall of the second cam is provided with the 3rd locating slot；3rd
The second alignment pin is provided between locating slot and the first locating slot；
Axostylus axostyle core includes shaft, and shaft top is provided with termination, is provided with termination and holds groove；Along shaft
Heart line offers oil duct, oil duct with hold groove insertion；
The second oil groove is provided with the middle part of shaft, the 4th oilhole, the 4th oilhole and oil are provided with the second oil groove
Road insertion；Shaft sequentially passes through the second cam, spacer ring and the first cam, and in axis hole.
Preferably, offering perforation along the center line of spacer ring, spacer ring is set in axostylus axostyle and puts by perforation.
The beneficial effects of the invention are as follows：The present invention has easily replacing, and convenient maintenance increases the service life, drops
The beneficial effects such as low cost.
Brief description of the drawings
Fig. 1 is decomposition texture schematic diagram of the present invention.
Fig. 2 is the structural representation of a specific embodiment.
Fig. 3 is cross section structure diagram of the invention.
Fig. 4 is specific embodiment schematic diagram.
Specific embodiment
With reference to the accompanying drawings and examples
The invention will be further described：
As Figure 1-Figure 4, a kind of cam structure, including axostylus axostyle 1 and axostylus axostyle core 11；Set on axostylus axostyle 1
There is axostylus axostyle to cover 12, internal thread 122 is provided with axostylus axostyle set 12；Axle is offered along the center line of axostylus axostyle set 12
Hole 121, the outer wall of axostylus axostyle set 12 offers the first locating slot 123, and the outer wall of axostylus axostyle set 12 is radially offered
First oil groove 124, is provided with the first oilhole 125, the first oilhole 125 and axis hole 121 on the first oil groove 124
Communicate, Sealing shield ring 126 is arranged with axostylus axostyle 1；The Sealing shield ring 126 is spacing for being carried out to the first cam 21.
Axostylus axostyle set 12 is arranged with the first cam 21, the cam 22 of spacer ring 3 and second successively from top to bottom；The
The outer wall of one cam 21 offers the second oilhole 213, and the inwall of the first cam 21 offers several second to be determined
Position groove 212, is provided with the first alignment pin 4 between the first locating slot 123 and the second locating slot 212, first is convex
Take turns 21 it is axially disposed have the first damping hole 211, the first damping hole 211 is communicated with the second oilhole 213；
Be provided with the second damping hole 221 and the 3rd oilhole 223 on second cam 22, the second damping hole 221 with
3rd oilhole 223 is communicated, and the inwall of the second cam 22 is provided with the 3rd locating slot 222；3rd locating slot 222
The second alignment pin 41 is provided between the first locating slot 123.The second locating slot 212 in the present invention and
Three locating slots 222 are correspondingly arranged with the first locating slot 123.
Axostylus axostyle core 11 includes shaft 111, and the top of shaft 111 is provided with termination 112, is set on termination 112
Hold groove 113；Offer oil duct 114 along the center line of shaft 111, oil duct 114 with hold the insertion of groove 113；
The middle part of shaft 111 is provided with the second oil groove 115, and the 4th oilhole 116 is provided with the second oil groove 115,
4th oilhole 116 and the insertion of oil duct 114；The bottom of shaft 111 is provided with external screw thread 117；Shaft 111 according to
It is secondary to pass through the second cam 22, the cam 21 of spacer ring 3 and first, and in axis hole 121, shaft 111 with
Axostylus axostyle set 12 is connected by internal thread 122 with external screw thread 117.Connected with external screw thread 117 by internal thread 122
Connect, the replacing and maintenance to the second cam 22, spacer ring 3, the first cam 21 and axostylus axostyle 1 can be facilitated.
Perforation 31 is offered along the center line of spacer ring 3, spacer ring 3 is set in axostylus axostyle and covers 12 by perforation 31
On.The spacer ring 3 be located between the first cam 21 and the second cam 22, and with the first cam 21 and second
Cam 22 is fitted.
When engine producer is opened and closed when testing to carry out engine air admittance valve 51 and drain tap 52,
First the first cam 21 can be socketed on axostylus axostyle set 12, the first cam 21 is adjusted to required angle, work as tune
It is whole it is well after, then the first alignment pin 4 is embedded between the second locating slot 212 and the first locating slot 123, from
And to fix the angle of the first cam 21.Then spacer ring 3 is socketed on axostylus axostyle set 12 using perforation 31,
The lower end of the first cam 2 is set to be fitted with Sealing shield ring 126, the upper end of the first cam 21 and the lower end of spacer ring 3
Laminating, then again by the second cam 22 be set in axostylus axostyle set 12 on, now the lower end of the second cam 22 and
The upper end laminating of spacer ring 3, adjusts to required angle, after adjusting, then by second by the second cam 22
Alignment pin 41 is embedded between the 3rd locating slot 222 and the first locating slot 123, so as to fix the second cam 22
Angle after adjustment, so that forming the angle of presumptive test between the first cam 21 and the second cam 22.
The camshaft of the first cam 21 and the default rear angle of the second cam 22 just can be arranged on engine by subsequent producer
In cylinder 5, and the first cam 21 and the second cam 22 is set to correspond to air intake valve 51 and the exhaust of engine respectively
Valve 52, then, starts the motor with assembling cam shaft, to drive camshaft to rotate, now, in rotation
Camshaft contacted according to the angle of assembling of the first cam 21 and the second cam 22 air intake valve 51 with exhaust
The Rocker arm 5 11 of valve 52, the test result of engine is obtained with this.Meanwhile, operated in camshaft
Meanwhile, hold lubricating oil is logical groove 113 and be injected into oil duct 114, centrifugal action when being rotated using camshaft,
Lubricating oil in oil duct 114 can be flowed into the first oilhole 125 through the 4th oilhole 116, through the second resistance
The damping hole 211 of Buddhist nun hole 221 and first, is flowed out, so that using profit by the 3rd oilhole 223 and the second oilhole 213
Lubricating oil plays lubrication to the surface and Rocker arm 5 11 of the first cam 21 and the second cam 22, reduces friction
Produced heat energy, with increase engine air intake valve 51 and drain tap 52 it is more suitable than with camshaft
Smooth property, effectively extends service life.
The present invention can arbitrarily convert the angle of the first cam 21 and the second cam 22, when producer is drawn
When holding up exploitation test, you can needed for according to test, quickly adjust the first cam 21 and the second cam 22
The angle needed for, effectively raises the testing efficiency of engine exploitation, moreover, it is not necessary to it is different by test
Camshaft is changed during angle, cost has effectively been saved, in addition the first cam 21, the second cam 22 or
When axostylus axostyle 1 is damaged, can individually be changed, it is effective to save without being changed to whole device again
Cost.
Preferred embodiment of the invention described in detail above.It should be appreciated that the ordinary skill of this area
Personnel just can make many modifications and variations without creative work with design of the invention.Therefore, it is all
Technical staff passes through logic analysis, pushes away on the basis of existing technology under this invention's idea in the art
Reason or the available technical scheme of limited experiment, all should be in the protection model being defined in the patent claims
In enclosing.
Claims (2)
1. a kind of cam structure, it is characterized in that：Including axostylus axostyle (1) and axostylus axostyle core (11)；The axostylus axostyle (1)
On be provided with axostylus axostyle set (12)；Axis hole (121) is offered along the center line of the axostylus axostyle set (12), it is described
The outer wall of axostylus axostyle set (12) offers the first locating slot (123), and the outer wall of the axostylus axostyle set (12) is radially
The first oil groove (124) is offered, the first oilhole (125) is provided with first oil groove (124), it is described
First oilhole (125) is communicated with the axis hole (121), and Sealing shield ring (126) is arranged with the axostylus axostyle (1)；
The axostylus axostyle set (12) is arranged with the first cam (21), spacer ring (3) and successively from top to bottom
Two cams (22)；The outer wall of first cam (21) offers the second oilhole (213), and described first is convex
The inwall for taking turns (21) offers several the second locating slots (212), first locating slot (123) and institute
State and be provided with the first alignment pin (4) between the second locating slot (212), first cam (21) is vertically
It is provided with the first damping hole (211), first damping hole (211) and the second oilhole (213) phase
It is logical；
The second damping hole (221) is provided with second cam (22), second cam (22)
Inwall is provided with the 3rd locating slot (222)；3rd locating slot (222) and first locating slot (123)
Between be provided with the second alignment pin (41)；
The axostylus axostyle core (11) includes shaft (111), and shaft (111) top is provided with termination (112),
It is provided with the termination (112) and holds groove (113)；Oil is offered along the center line of the shaft (111)
Road (114), the oil duct (114) holds groove (113) insertion with described；
The second oil groove (115) is provided with the middle part of the shaft (111), on second oil groove (115)
It is provided with the 4th oilhole (116), the 4th oilhole (116) and the oil duct (114) insertion；It is described
Shaft (111) sequentially passes through second cam (22), spacer ring (3) and first cam (21),
And in the axis hole (121).
2. a kind of cam structure as claimed in claim 1, it is characterized in that：Along the spacer ring (3)
Center line offers perforation (31), and the spacer ring (3) is set in the axostylus axostyle by the perforation (31)
On set (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510933131.XA CN106870045A (en) | 2015-12-13 | 2015-12-13 | A kind of cam structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510933131.XA CN106870045A (en) | 2015-12-13 | 2015-12-13 | A kind of cam structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106870045A true CN106870045A (en) | 2017-06-20 |
Family
ID=59238618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510933131.XA Pending CN106870045A (en) | 2015-12-13 | 2015-12-13 | A kind of cam structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106870045A (en) |
-
2015
- 2015-12-13 CN CN201510933131.XA patent/CN106870045A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170620 |
|
| WD01 | Invention patent application deemed withdrawn after publication |