CN201074532Y - Valve driving mechanism of rocker arm type engine - Google Patents
Valve driving mechanism of rocker arm type engine Download PDFInfo
- Publication number
- CN201074532Y CN201074532Y CNU2007200868908U CN200720086890U CN201074532Y CN 201074532 Y CN201074532 Y CN 201074532Y CN U2007200868908 U CNU2007200868908 U CN U2007200868908U CN 200720086890 U CN200720086890 U CN 200720086890U CN 201074532 Y CN201074532 Y CN 201074532Y
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- CN
- China
- Prior art keywords
- rocking arm
- rocker arm
- insert
- lubricating oil
- air valve
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- 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.)
- Expired - Lifetime
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- Valve Device For Special Equipments (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
A valve driving mechanism of a rocker arm type engine comprises a rocker arm, a rocker arm shaft, a rocker arm insert and a valve yoke and is characterized in that the rocker arm insert is fixed at the head of the rocker arm, the lower end of the rocker arm insert is in line contact with the valve yoke, lubricating oil channels (1-1) and (2-1) are respectively machined in the rocker arm and the rocker arm insert, one end of the lubricating oil channel (1-1) positioned on the rocker arm is communicated with a rocker arm shaft hole in the rocker arm, the other end of the lubricating oil channel (2-1) positioned in the rocker arm insert is communicated with the upper end of the lubricating oil channel (2-1) positioned in the rocker arm insert, and the lower end of the. The utility model has the advantages of as follows: 1. lubricating oil is communicated with a contact track between the rocker arm insert and the air valve yoke, and the lubricating oil is always in a flowing state, so that the updating speed is high, and the abrasion between the rocker arm insert and the air valve yoke is reduced; 2. due to the throttling effect of the stepped hole of the lubricating oil channel (2-1) on the rocker arm insert block, excessive oiling is avoided, the power consumed for pumping engine oil is reduced, and the possibility of carbon deposition of the air valve is reduced.
Description
Technical field
The utility model relates to engine valve actuations mechanism.Relate in particular to a kind of rocking arm type engine valve actuations mechanism, be used to drive two intake valves and two exhaust valves on underlying, the OHV formula four-valve engine.
Technical background
(see figure 2) in the available engine valve actuating mechanism, for two intake valves of underlying, OHV formula four-valve engine or two exhaust valves generally by air valve yoke (being commonly called as " transverse arm ") synchronous drive.Wherein, rocking arm 1 is inserted and 2 is pressed on the air valve yoke by being fixed on rocking arm on the rocking arm 1, and the air valve yoke drives two valves and is synchronized with the movement.Because rocking arm is inserted and had the reciprocal rolling and the sliding friction of high frequency between the 2 gentle valve yokes, and be the line contact between the two, contact stress is bigger, the inordinate wear that causes rocking arm to insert 2 gentle valve yokes easily.So except that require rocking arm insert 2 with the air valve conjugated material wear-resisting, also require must to have between the two sufficient lubricated.Current lubricated scheme main structure is: oil leab 1-1 is arranged in rocking arm, and oil leab 1-1 one port is positioned on the pitman arm shaft, and the another port is positioned on the rocking arm face, and simultaneously, the oil leab port that is positioned on the rocking arm face links to each other with guiding gutter on the rocking arm face.Lubricant oil is flowed out by pitman arm shaft 4, flow into the oil leab 1-1 of processing on rocking arm, a lubricant oil part that ejects from oil leab 1-1 flows into and flows to rocking arm behind the guiding gutter of rocking arm end face and insert between the 2 gentle valve yokes, and another part enters cylinder by the gap between valve guide bushing and the valve.
In above-mentioned prior art scheme, first, because pitman arm shaft 4 place's engine oil pressures are generally higher, the oil level that is ejected by oil leab 1-1 is bigger, but only having a very little part to flow to rocking arm inserts between the 2 gentle valve yokes, the lubricants capacity deficiency appears sometimes, this can cause rocking arm insert 2 and the air valve yoke between insufficient lubrication, produce inordinate wear; Second, eject too much oil mass from oil leab 1-1, the long-pending oil in cylinder head top too much flows into by the gap between valve guide bushing and the engine valve stem that the machine oil of cylinder is burned to be fallen, not only caused the waste of machine oil, the power that also makes motor be consumed in pumping machine oil increases; The 3rd, machine oil is flowed through behind the valve, is deposited in air valve cervix, forms carbon distribution, has influenced the air inflow of air, has reduced the power character of motor.
Chinese patent CN01263061.6 discloses the utility model patent that a kind of name is called engine valve actuations mechanism on June 19th, 2002, employing face contacts between the rocking arm head of this patent and the air valve yoke, though, stress situation between them is greatly improved, but do not solve lubrication problem, can have the inordinate wear situation equally.
Summary of the invention
For solve that rocking arm is inserted and the air valve yoke between insufficient lubrication, produce the problem of inordinate wear, the utility model provide a kind of make rocking arm insert and the air valve yoke between lubricated sufficient rocking arm type engine valve actuations mechanism, simultaneously, also reduce the waste of machine oil and pumping machine oil power, and do not influence the power character of motor.
The purpose of this utility model is achieved in that a kind of rocking arm type engine valve actuations mechanism, the rocking arm that comprise rocking arm, pitman arm shaft, is fixed on the rocking arm head insert and with the rocking arm contacted air valve yoke of inserting, be processed with oil leab respectively in rocking arm and the rocking arm inside of inserting, oil leab one end that is positioned on the rocking arm communicates with rocker shaft hole, the insert upper end of internal lubrication oil duct of the other end and rocking arm communicates, rocking arm insert that the lower end of internal lubrication oil duct leads to that rocking arm is inserted and the air valve yoke between the contact position.
In such scheme, the oil leab during described rocking arm is inserted can be straight aperture, also can be narrow meshed shoulder hole, and aperture is positioned at the bottom.
Above-mentioned rocking arm insert the internal lubrication oil duct lower end mouth preferably rocking arm insert and the air valve yoke between the central position of contact trace.
Oil leab and valve the insert inner oil leab of machine oil by rocking arm inside flows to rocking arm and inserts and be lubricated between the gentle valve yoke.
In sum, the utility model is compared with the above-mentioned background technology and is had following beneficial effect:
1, since the oil leab on the rocking arm link to each other with oil leab on inserting, therefore, oil leab the lubricant oil that oil leab from rocking arm ejects flows directly into and inserts, can not produce the machine oil waste, flow to that rocking arm is inserted and the air valve yoke between oil level can satisfy lubricated needs, reduced the inordinate wear between the two.
2, rocking arm is inserted and is provided with the oil leab hole, and this oil leab hole is less to have throttling action, avoids oiling too much, and the power that consumes on pumping machine oil reduces; When adopting the shoulder hole structure, can also reduce the insert difficulty of processing of oil leab of rocking arm.
3, because the oil leab on the rocking arm links to each other with oil leab on inserting, do not have the too much machine oil valve of flowing through, avoided the problem of air valve neck carbon distribution, do not influence the air inflow of air and the power character of motor.
Description of drawings
Fig. 1 is the utility model structural representation
Fig. 2 is the used rocker structure schematic representation of current techniques
Embodiment
Referring to Fig. 1, the utility model comprises rocking arm 1, pitman arm shaft 4, the rocking arm 2 gentle valve yokes 3 of inserting.Wherein, rocking arm inserts 2 with interference or otherwise be fixed on the rocking arm 1, or rocking arm 1 and rocking arm inserted 2 is made of one.Rocking arm is inserted, and line contacts between 2 lower ends and the air valve yoke 3, be processed with oil leab 1-1 and 2-1 respectively in rocking arm 1 and rocking arm 2 inside of inserting; the oil leab 2-1 that rocking arm is inserted in 2 can be processed into straight aperture; also can be processed into the shoulder hole of band aperture 2-2; what present embodiment provided is the shoulder hole of band aperture 2-2; the lower end mouth of this oil leab 2-1 rocking arm insert 2 with air valve yoke 3 between the central position of contact trace, be convenient to lubricate above-mentioned contact trace.Machine oil flows to pitman arm shaft 4 under the pumping pressure effect of oil pump, enter oil leab 1-1 in the rocking arm 1 through pitman arm shaft 4 again and arrive insert oil leab 2-1 in 2 of rocking arm.The diameter of the shoulder hole of oil leab is less because rocking arm is inserted in 2, and through the aperture 2-2 throttling that rocking arm is inserted the oil duct 2-1 in 2, it is also just less to flow out insert 2 oil level of rocking arm, and aperture 2-2 aperture is about 2mm.Since shoulder hole aperture 2-2 aperture open rocking arm insert 2 with air valve yoke 3 between the central position of contact trace; rocking arm insert 2 with air valve yoke 3 between contact for line; dying can guarantee in engine operation process all the time organic oil from the outflow of shoulder hole aperture, lubricated rocking arm insert 2 and air valve yoke 3 between contact trace.
Claims (4)
1. rocking arm type engine valve actuations mechanism, comprise rocking arm (1); pitman arm shaft (4); the rocking arm that is fixed on described rocking arm (1) head is inserted (2); with described rocking arm (2) the contacted air valve yokes (3) of inserting; it is characterized in that: be processed with oil leab (1-1) and (2-1) respectively; be arranged in rocking arm (1) and go up oil leab (1-1) end and communicate; insert with the rocking arm upper end of (2) internal lubrication oil duct (2-1) of the other end communicates with rocking arm (1) rocker shaft hole in rocking arm (1) and rocking arm (2) inside of inserting, rocking arm insert (2) internal lubrication oil duct (2-1) the lower end towards rocking arm insert (2) and air valve yoke (3) between the contact position.
2. a kind of rocking arm type engine valve actuations according to claim 1 mechanism is characterized in that the oil leab (2-1) that described rocking arm is inserted in (2) is straight aperture.
3. a kind of rocking arm type engine valve actuations according to claim 1 mechanism is characterized in that the oil leab (2-1) that described rocking arm is inserted in (2) is the shoulder hole of band aperture (2-2), and aperture (2-2) is positioned at the bottom.
4. according to the described a kind of rocking arm type engine valve actuations of arbitrary claim in the claim 1 to 3 mechanism, it is characterized in that inserting described rocking arm the lower end mouth of internal lubrication oil duct (2-1) be positioned at that rocking arm is inserted (2) and air valve yoke (3) between the central position of contact trace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200868908U CN201074532Y (en) | 2007-09-10 | 2007-09-10 | Valve driving mechanism of rocker arm type engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200868908U CN201074532Y (en) | 2007-09-10 | 2007-09-10 | Valve driving mechanism of rocker arm type engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201074532Y true CN201074532Y (en) | 2008-06-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200868908U Expired - Lifetime CN201074532Y (en) | 2007-09-10 | 2007-09-10 | Valve driving mechanism of rocker arm type engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201074532Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330585A (en) * | 2011-08-05 | 2012-01-25 | 无锡开普动力有限公司 | Lubrication mechanism of valve rocker |
| CN104088680A (en) * | 2014-06-22 | 2014-10-08 | 中国北方发动机研究所(天津) | Frame rocker |
| CN107598117A (en) * | 2017-09-12 | 2018-01-19 | 台州威德隆机械有限公司 | A kind of rocking arm component and preparation method thereof |
| CN108223048A (en) * | 2018-02-07 | 2018-06-29 | 广西玉柴机器股份有限公司 | The lubricating system of engine valve rocker arm component |
-
2007
- 2007-09-10 CN CNU2007200868908U patent/CN201074532Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330585A (en) * | 2011-08-05 | 2012-01-25 | 无锡开普动力有限公司 | Lubrication mechanism of valve rocker |
| WO2013020358A1 (en) * | 2011-08-05 | 2013-02-14 | 无锡开普动力有限公司 | Lubrication mechanism of valve rocker arm |
| CN104088680A (en) * | 2014-06-22 | 2014-10-08 | 中国北方发动机研究所(天津) | Frame rocker |
| CN107598117A (en) * | 2017-09-12 | 2018-01-19 | 台州威德隆机械有限公司 | A kind of rocking arm component and preparation method thereof |
| CN108223048A (en) * | 2018-02-07 | 2018-06-29 | 广西玉柴机器股份有限公司 | The lubricating system of engine valve rocker arm component |
| CN108223048B (en) * | 2018-02-07 | 2023-09-29 | 广西玉柴机器股份有限公司 | Lubrication system for engine valve rocker assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DONGFENG COMMERCIAL VEHICLE CO., LTD. Free format text: FORMER OWNER: DONGFENG AUTOMOBILE CO., LTD. Effective date: 20130917 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 430056 WUHAN, HUBEI PROVINCE TO: 442001 SHIYAN, HUBEI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130917 Address after: 442001 Shiyan City, Hubei province city Zhangwan District Road No. 2 Patentee after: Dongfeng Commercial Vehicle Co.,Ltd. Address before: 430056 Dongfeng Road, Wuhan Economic & Technological Development Zone, Hubei, Wuhan, China, No. 10 Patentee before: DONGFENG MOTER Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20080618 |
|
| CX01 | Expiry of patent term |