CN206360741U - A kind of intake and exhaust rocking arm - Google Patents
A kind of intake and exhaust rocking arm Download PDFInfo
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- CN206360741U CN206360741U CN201621492073.8U CN201621492073U CN206360741U CN 206360741 U CN206360741 U CN 206360741U CN 201621492073 U CN201621492073 U CN 201621492073U CN 206360741 U CN206360741 U CN 206360741U
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- roller bearing
- side plate
- intake
- rocking arm
- connecting plate
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Abstract
The utility model provides a kind of intake and exhaust rocking arm, belongs to technical field of engines.It is sliding friction that it, which is solved between existing intake and exhaust rocking arm and valve briquetting in transmission process, and frictional resistance is big, the flimsy technical problem of part.This intake and exhaust rocking arm, including rocker arm body and the roller bearing one that can be in contact with cam; rocker arm body includes the side plate one and side plate two being oppositely arranged; roller bearing one is articulated between the side plate one and side plate two; rocker arm body one end has the connecting plate one being fixedly connected with side plate one and side plate two; downside of connecting plate one is provided with roller bearing two; two ends of roller bearing two are connected with side plate one and side plate two respectively; the roller bearing two can freely be rotated around own axes, and roller bearing two is arranged with roller bearing one in diameter parallel.The utility model improves the intensity of biside plate and the relative motion between rocking arm and valve system is converted into rolling friction by sliding friction, reduces frictional resistance, improves the job stability of valve rocker.
Description
Technical field
The utility model belongs to field of mechanical technique, is related to a kind of intake and exhaust rocking arm.
Background technology
The function of intake and exhaust rocker arm body is in the presence of valve actuating mechanism camshaft and push rod, periodically to open or close
Intake and exhaust channel, makes fresh air enter cylinder, and the waste gas after burning is discharged out of cylinder, realizes and enters row in working cycles
Gas process.Intake and exhaust rocking arm is the important spare part of engine valve actuating mechanism, and roller rocker arms are high because of its fuel efficiency, Jing Yin effect
It is really good, and be gradually applied in more automobile engines.
The Chinese patent that announcement number is the U of CN 202970826 altogether is authorized to disclose a kind of diesel engine intake rocking-arm driving mechanism,
Including intake rocker, camshaft, hydraulic tappet, valve briquetting, roller bearing；Wherein intake rocker include two side support arms and
Rocker arm shaft；The camshaft is Single Over Head Camshaft, and the timing phase that bent axle is transmitted through is driven in roller bearing by it, roller
Bearing is connected by rocker arm shaft with intake rocker；Hydraulic tappet and intake rocker are respectively positioned at the following of intake rocker both ends.
Above-mentioned roller rocker arms transmission mechanism stable drive, but still there are some defects：Between rocking arm and valve briquetting
It is sliding friction in transmission process, greatly, part is fragile for frictional resistance.
The content of the invention
The utility model for existing technology exist above mentioned problem there is provided a kind of intake and exhaust rocking arm, the utility model
Technical problem to be solved is：How the job stability of intake and exhaust rocking arm is improved.
The purpose of this utility model can be realized by following technical proposal：
A kind of intake and exhaust rocking arm, including rocker arm body and the roller bearing one that can be in contact with cam, the rocker arm body
Including the side plate one and side plate two being oppositely arranged, the roller bearing one is articulated between the side plate one and side plate two, this its
It is characterised by, described rocker arm body one end has the connecting plate one being fixedly connected with side plate one and side plate two, the connecting plate one
Downside is provided with roller bearing two, and the two ends of roller bearing two are connected with side plate one and side plate two respectively, and the roller bearing two can
Freely rotated around own axes, roller bearing two is arranged with the roller bearing one in diameter parallel.
This intake and exhaust rocking arm operation principle is as follows：Rocker arm body one end is contacted with air valve bridge, and the other end is cut with scissors with governor motion
Connect, roller bearing one leans with the cam on camshaft, side plate one and side plate two provide stable stress branch for roller bearing
Support, air valve bridge produces upward active force to rocker arm body one end, makes roller because of the preloading spring elastic force effect set on valve
Bearing a pair of cams also produces upward active force, so as to keep the stabilization of relative position, when the engine is running, crank connecting link
Mechanism comes into operation, and camshaft starts to rotate, and cam is irregular roundness, and roller bearing one is free to rotate, then also rises and falls therewith
Motion, one end that corresponding rocker arm body is contacted with air valve bridge is also moved therewith, by carrying out rational detailed design to mechanism, is made
The engine valve folding time matches with cam phase, so as to realize normal lasting operation.By setting roller bearing two
So that the friction in engine operation process between air valve bridge and rocking arm is rolling friction, the resistance compared to sliding friction subtracts
It is small；Roller bearing two is located between side plate and is connected with side plate, and stress is operated for a long time, and side plate is easily deformed and then influences to coordinate essence
Degree, causes roller bearing to rotate and is obstructed, by setting connecting plate one, adds biside plate intensity, and transmission is more stablized；Roller Shaft
Hold two to arrange in diameter parallel with roller bearing one, it is ensured that the conduction orientation of power is stable between cam and valve system.
In a kind of above-mentioned intake and exhaust rocking arm, the connecting plate one is provided with oilhole, and the oilhole outlet is described in
Roller bearing two, the oilhole is cylinder or cone or hemispherical.It is rolling friction between roller bearing two and valve system, rubs
Wipe resistance relatively small, by opening up oilhole on connecting plate one, be easy to be connected as the offer profit of roller bearing two with oil supply system
It is sliding, further reduce frictional resistance.
In a kind of above-mentioned intake and exhaust rocking arm, the roller bearing two is located between the side plate one and side plate two, should
The external diameter of roller bearing two is less than the roller bearing one.Roller bearing is in addition to the characteristic with rolling, and it is also bearing for power
Unit, when roller rocker arms work, rocking arm body is swung around its one end contacted with governor motion, and roller is understood by lever principle
The roller bearing one that the load ratio that bearing two is born is arranged in the middle part of rocking arm body is small, therefore uses the less roller bearing of external diameter
Intensity requirement can be just met, cost and weight is reduced.
In a kind of above-mentioned intake and exhaust rocking arm, the side plate two has step close to one end of the roller bearing two
Section, the roller bearing two is located between the step section and the side plate one.The size of roller bearing two and roller bearing one is not
Together, by setting step section on side plate two, the gap of roller bearing two and side sheet room is reduced, makes structure compacter, limited
Roller bearing axial float, makes rocking arm work more stablize.
In a kind of above-mentioned intake and exhaust rocking arm, the rocker arm body other end, which has, connects the side plate one and side plate two
Connecting plate two, the connecting plate two is provided with downward opening half ball groove, and the hemisphere trench bottom offers oil duct, the oil
The outlet in road is towards the roller bearing one.Because of meeting reciprocally swinging in the rocking arm course of work, set half ball groove can be with governor motion
The bulb of interior hydraulic tappet is relative to be slided, so as to realize normal operation, oil duct that hemisphere trench bottom is opened up and governor motion
Oil supply gallery is connected, and by fluid by exporting injection to the roller bearing one with cam contact, lubrication, reduction friction are provided for it
Resistance.
In a kind of above-mentioned intake and exhaust rocking arm, there is clamping projection on the connecting plate two, the clamping projection is located at
The end of the connecting plate two.Contact of half ball groove with governor motion is mainly ensured by cam to the pressure of rocking arm, and is sent out
Motivation system condition is complicated, and failure is extremely easily deviate from such cooperation by external force, by setting jump ring clamping projection to be easy to
It is connected by jump ring with hydraulic tappet, hydraulic tappet is difficult abjection, and the stability of structure is more preferable.
In a kind of above-mentioned intake and exhaust rocking arm, the roller bearing two by way of riveting with side plate one and side plate two
Connection.The working environment on engine periphery is affected by vibration larger, and roller bearing two tends not to frequent dismounting, using riveting
Mode, which is connected, can ensure higher connective stability, more scientific and reasonable using riveting herein.
Compared with prior art, advantage of the present utility model is as follows：
1st, this intake and exhaust rocking arm sets connecting plate and Roller Shaft by the one end contacted in rocker arm body with valve system
Two are held, the intensity of biside plate is improved and the relative motion between rocking arm and valve system is converted into rolling by sliding friction and rub
Wipe, reduce frictional resistance, improve the job stability of valve rocker.
Brief description of the drawings
Fig. 1 is the diagrammatic cross-section of this intake and exhaust rocking arm and cam engagement.
Fig. 2 is the front schematic view of this intake and exhaust rocking arm.
Fig. 3 is the elevational schematic view of this intake and exhaust rocking arm.
In figure, 1, rocker arm body；2nd, roller bearing one；3rd, cam；4th, roller bearing two；5th, side plate one；6th, side plate two；
61st, step section；7th, connecting plate one；71st, oilhole；8th, connecting plate two；81st, half ball groove；82nd, oil duct；83rd, clamping projection；9th, valve
Bridge.
Embodiment
The following is specific embodiment of the utility model and with reference to accompanying drawing, further is made to the technical solution of the utility model
Description, but the utility model is not limited to these embodiments.
As Figure 1-3, this intake and exhaust rocking arm includes rocker arm body 1 and the roller bearing 1 that can be leant with cam 3,
Rocker arm body 1 includes the side plate 1 and side plate 26 that are oppositely arranged, roller bearing 1 be articulated with side plate 1 and side plate 26 it
Between, the one end of rocker arm body 1 has the connecting plate 1 being fixedly connected with side plate 1 and side plate 26, and the downside of connecting plate 1 is provided with rolling
Sub- bearing 24, the two ends of roller bearing 24 are connected with side plate 1 and side plate 26 respectively, and roller bearing 24 can be around own axes certainly
By rotating, roller bearing 24 is arranged with roller bearing 1 in diameter parallel.The one end of rocker arm body 1 is contacted with valve system, separately
One end is hinged with governor motion, roller bearing 1 leans with the cam 3 on the axle of cam 3, and valve system on valve because setting
Preloading spring elastic force is acted on, and upward active force is produced to the one end of rocker arm body 1, make one 2 pairs of cams 3 of roller bearing also produce to
On active force, so as to keep the stabilization of relative position, when the engine is running, toggle comes into operation, the axle of cam 3
Start to rotate, cam 3 is irregular roundness, the then also undulatory motion therewith of roller bearing 1, corresponding rocker arm body 1 and valve system
One end of contact is also moved therewith, by carrying out rational detailed design to mechanism, makes engine valve folding time and cam 3
Phase non-colinear position, so as to realize normal lasting operation.By setting roller bearing 24 to cause the gas in engine operation process
Friction between door briquetting and rocking arm is rolling friction, and the resistance compared to sliding friction is greatly reduced；Roller bearing 24 is located at side
Between plate, stress is operated for a long time, side plate is easily deformed and then influences fit precision, cause roller bearing to rotate and be obstructed, by setting
Connecting plate 1 is put, biside plate intensity is added, transmission is more stablized；Roller bearing 24 is in diameter parallel with roller bearing 1
Arrangement, it is ensured that the conduction orientation of power is stable between cam 3 and valve system.For further, connecting plate 1 is provided with oilhole 71,
Oilhole 71 is exported towards roller bearing 24, and oilhole 71 is cylinder or cone or hemispherical.Roller bearing 24 and valve train
It is rolling friction between system, frictional resistance is relatively small, by opening up oilhole 71 on connecting plate 1, is easy to connect with oil supply system
It is connected in roller bearing 24 and lubrication is provided, further reduces frictional resistance.
As shown in figure 3, roller bearing 24 is located between side plate 1 and side plate 26, the external diameter of roller bearing 24 is less than rolling
Sub- bearing 1.Roller bearing is in addition to the characteristic with rolling, and it is also that power bears unit, when roller rocker arms work, rocking arm
Body is swung around its one end contacted with governor motion, understands that the load ratio that roller bearing 24 is subject to is arranged in by lever principle
Roller bearing 1 in the middle part of rocking arm body is small, therefore roller bearing 24 can just meet intensity requirement using less size,
Reduce cost and weight.Furthermore, it is understood that side plate 26 has step section 61, roller bearing two close to one end of roller bearing 24
4 are located between step section 61 and side plate 1.Roller bearing 24 is different from the size of roller bearing 1, by side plate 26
Step section 61 is set, the fit clearance of roller bearing 24 and side sheet room is reduced, makes structure compacter, roller bearing axle is limited
To play, structural stability is improved.
As shown in Figure 1, Figure 3, the other end of rocker arm body 1 has the connecting plate 28 of connecting lateral plate 1 and side plate 26, connection
Plate 28 is provided with downward opening half ball groove 81, and the bottom of half ball groove 81 offers oil duct 82, and the outlet of oil duct 82 is towards Roller Shaft
Hold 1.Because of meeting reciprocally swinging in the rocking arm course of work, the bulb phase that half ball groove 81 of setting can be with the hydraulic tappet in governor motion
To sliding, so as to realize normal operation, the oil duct 82 that the bottom of half ball groove 81 is opened up is connected with the oil supply gallery of governor motion, by oil
Liquid provides lubrication for it, further reduces frictional resistance by exporting injection to the roller bearing 1 contacted with cam 3.Enter one
For step, there is clamping projection 83 on connecting plate 28, clamping projection 83 is located at the end of connecting plate 28.Half ball groove 81 and regulation
The contact of mechanism is mainly ensured by cam 3 to the pressure of rocking arm, and engine system operating mode is complicated, such cooperation pole
It is easily deviate from failure by external force, is connected hydraulic tappet with clamping projection 83 by using shackle member, hydraulic tappet column cap
Lower end is typically designed corresponding neck, and pocket edges seamlessly transit follows rocking arm rotation to provide certain stroke sky for shackle member
Between, while making hydraulic tappet be difficult abjection, so as to possess more preferable stability.
Specific embodiment described herein is only to the utility model spirit explanation for example.The utility model institute
Category those skilled in the art can make various modifications or supplement or using similar to described specific embodiment
Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.
Claims (7)
1. a kind of intake and exhaust rocking arm, including rocker arm body (1) and the roller bearing one (2) for being in contact with cam (3), described
Rocker arm body (1) includes the side plate one (5) and side plate two (6) being oppositely arranged, and the roller bearing one (2) is articulated with the side plate
Between one (5) and side plate two (6), it is characterised in that described rocker arm body (1) one end has and side plate one (5) and side plate two (6)
Mutually solid connecting plate one (7), the downside of the connecting plate one (7) is provided with the roller bearing two (4) that can be contacted with air valve bridge (9),
The two ends of the roller bearing two (4) are connected with side plate one (5) and side plate two (6) respectively, and the roller bearing two (4) can be around certainly
Body axis is freely rotated, and roller bearing two (4) is arranged with the roller bearing one (2) in diameter parallel.
2. a kind of intake and exhaust rocking arm according to claim 1, it is characterised in that the connecting plate one (7) is provided with oilhole
(71), oilhole (71) outlet is towards the roller bearing two (4), and the oilhole (71) is cylinder or cone or hemisphere
Shape.
3. a kind of intake and exhaust rocking arm according to claim 1 or 2, it is characterised in that the external diameter of the roller bearing two (4)
Less than the roller bearing one (2).
4. a kind of intake and exhaust rocking arm according to claim 3, it is characterised in that the side plate two (6) is close to the roller
One end of bearing two (4) has step section (61), and the roller bearing two (4) is located at the step section (61) and the side plate one
(5) between.
5. a kind of intake and exhaust rocking arm according to claim 1 or 2, it is characterised in that rocker arm body (1) other end tool
There is the connecting plate two (8) for connecting the side plate one (5) and side plate two (6), the connecting plate two (8) is provided with downward opening half
Ball groove (81), half ball groove (81) bottom offers oil duct (82), and the outlet of the oil duct (82) is towards the roller bearing
One (2).
6. a kind of intake and exhaust rocking arm according to claim 5, it is characterised in that have on the connecting plate two (8) in length
Square clamping projection (83), is easy to be connected with jump ring, and the clamping projection (83) is located at the end of the connecting plate two (8).
7. a kind of intake and exhaust rocking arm according to claim 1, it is characterised in that the roller bearing two (4) passes through riveting
Mode be connected with side plate one (5) and side plate two (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621492073.8U CN206360741U (en) | 2016-12-31 | 2016-12-31 | A kind of intake and exhaust rocking arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621492073.8U CN206360741U (en) | 2016-12-31 | 2016-12-31 | A kind of intake and exhaust rocking arm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206360741U true CN206360741U (en) | 2017-07-28 |
Family
ID=59378969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621492073.8U Active CN206360741U (en) | 2016-12-31 | 2016-12-31 | A kind of intake and exhaust rocking arm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206360741U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109057904A (en) * | 2018-08-10 | 2018-12-21 | 东北石油大学 | A kind of Valve Train of Vehicle Engine based on VVT |
-
2016
- 2016-12-31 CN CN201621492073.8U patent/CN206360741U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109057904A (en) * | 2018-08-10 | 2018-12-21 | 东北石油大学 | A kind of Valve Train of Vehicle Engine based on VVT |
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