CN204457902U - Roller type tappet - Google Patents
Roller type tappet Download PDFInfo
- Publication number
- CN204457902U CN204457902U CN201420833732.4U CN201420833732U CN204457902U CN 204457902 U CN204457902 U CN 204457902U CN 201420833732 U CN201420833732 U CN 201420833732U CN 204457902 U CN204457902 U CN 204457902U
- Authority
- CN
- China
- Prior art keywords
- roller
- tappet
- roller shaft
- reserve
- axis hole
- 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.)
- Expired - Fee Related
Links
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000005461 lubrication Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 30
- 239000000314 lubricant Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000003642 hunger Nutrition 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000037351 starvation Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The utility model discloses a kind of roller type tappet, comprise tappet body and roller, described tappet body is provided with roller axis hole, be fixed with in roller axis hole and roller is fixed on the intrinsic roller shaft of tappet, described roller and roller shaft are rotationally connected, it is characterized in that being provided with the longitudinal oil duct be communicated with roller axis hole by tappet inner chamber in described tappet body, the oil outlet of the corresponding longitudinal oil duct in surface of described roller shaft offers the reserve axially arranged along roller shaft.By arranging in tappet body on longitudinal oil duct, roller shaft, reserve is set, effectively can improve the lubrication circumstances of roller and roller shaft, both minimizings wear out failure probability of happening, by arranging boss in the side of tappet roller axis hole, longitudinal oil duct of the reserve of roller shaft and tappet body is accurately located, reduces the manufacturing procedure in extra locating stud (or positioning screwn) hole.
Description
Technical field
The utility model relates to a kind of roller type tappet.
Background technique
Tappet is divided into flat tappet and roller type tappet by its structure type.Roller type tappet, by roller and cam Structure deformation, is rolling friction.The function of tappet and working principle are: tappet body is arranged in the tappet hole 3 in body, and below and cam contact, be shown in Fig. 1.By the rotation of camshaft 4, the molded line profile of cam is converted into pumping of tappet, this being pumped by the push rod that is inserted into tappet inner chamber passes to rocking arm, realizes the opening and closing action of inlet and outlet door eventually through rocking arm.Roller 2 is fixed in tappet body by roller shaft 1, and roller shaft is fixed, and roller rotates around roller shaft, is sliding friction between roller shaft and roller.Lubricant oil generally flows into from the top of tappet, and by tappet internal galleries, flow into the friction pair between tappet roller and camshaft, improve lubrication therebetween, tappet lubricating oil path is shown in shown in Fig. 1 dotted line.
Due to the continuous lifting of internal-combustion engine coefficient of intensification, tappet roller and roller shaft contact stress constantly increase.The friction pair that roller shaft and roller are formed is Spielpassung, and roller counter roller axle rotates, and the two is sliding friction.Because the two is relative to the friction pair between camshaft and roller shape, its lubricating condition is poorer, has occurred more roller shaft wear-out failure.
The patent No. is 201320167816.4 and is called in a kind of patent of high-power diesel engine intake and exhaust tappet, by increasing roller bush, and increasing oil leab in roller shaft, reaching the object strengthening roller shaft lubrication.Because the oil duct of roller shaft and tappet oil duct need accurately locate, the realization of its orientation type employing screw.This kind of structure has following shortcoming: the cost that makes increasing roller bush in (1) roller tappet improves, and reason is that the extra roller bush required precision increased is very high, and adds multiple tracks processing, assembly process; (2) this structure according in roller shaft and tappet body respectively processing bolt hole mode, make manufacturing procedure complicated, and install after processing screw hole, easily by Roller Shaft oil-hole location dress partially, cause lining oil starvation, increase wear out failure probability.If tappet has assembled aft-loaded airfoil screw hole, easily make machining chips enter oil leab, cause chip to clear up, Final pollution lubricant oil.
Summary of the invention
The technical problems to be solved in the utility model is to provide the roller type tappet lubricating between a kind of roller and roller shaft and wear problem well, not easily occurs.
For solving the problems of the technologies described above, the utility model comprises tappet body and roller, described tappet body is provided with roller axis hole, be fixed with in roller axis hole and roller is fixed on the intrinsic roller shaft of tappet, described roller and roller shaft are rotationally connected, it is characterized in that being provided with the longitudinal oil duct be communicated with roller axis hole by tappet inner chamber in described tappet body, the oil outlet of the corresponding longitudinal oil duct in surface of described roller shaft offers the reserve axially arranged along roller shaft.
The axis of described longitudinal oil duct and the axis being parallel of tappet body, the described axis of longitudinal oil duct is positioned at same plane with the axis of roller shaft and mutually vertical.
Described roller is arranged on the oil storage section of roller shaft.
Described reserve is formed by a planar horizontal cutting roller axle being parallel to roller shaft axis.
Described reserve is the deep gouge be opened on roller shaft.
Described reserve has an opening end and closed end, described opening end is concordant with the end face of the axial one end of roller shaft, the closed end of described reserve and roller shaft are arranged with the end surfaces of one end, described tappet body is provided with and stretches into roller axis hole and the chuck matched with roller shaft reserve opening end, thus the internal surface of roller axis hole and the outer surface of roller shaft are fastened.
After adopting said structure, by arranging in tappet body on longitudinal oil duct, roller shaft, reserve is set, effectively can improve the lubrication circumstances of roller and roller shaft, both minimizings wear out failure probability of happening, by arranging boss in the side of tappet roller axis hole, longitudinal oil duct of the reserve of roller shaft and tappet body is accurately located, reduces the manufacturing procedure in extra locating stud (or positioning screwn) hole.
Accompanying drawing explanation
Below in conjunction with the drawings and the specific embodiments, the utility model is described in further detail:
Fig. 1 is the structural representation of prior art
Fig. 2 structural representation of the present utility model;
Fig. 3 is perspective view of the present utility model;
Fig. 4 is the structural representation of roller shaft;
Fig. 5 is the right elevation of Fig. 4;
Fig. 6 is the structural representation of the another kind of embodiment of roller shaft;
Fig. 7 is the right elevation of Fig. 6.
Embodiment
Roller type tappet comprises tappet body 1 and roller 3, tappet body 1 is provided with roller axis hole, the roller shaft 4 be fixed on by roller 3 in tappet body 1 is fixed with in roller axis hole, roller 3 and roller shaft 4 are rotationally connected, the longitudinal oil duct 6 be communicated with roller axis hole by tappet inner chamber 2 is provided with in tappet body 1, longitudinal axis of oil duct 6 and the axis being parallel of tappet body 1, the axis of longitudinal oil duct 6 is positioned at same plane with the axis of roller shaft 4 and mutually vertical.The oil outlet of the corresponding longitudinal oil duct 6 in surface of roller shaft 4 offers the reserve 5 axially arranged along roller shaft 4.Roller is arranged on 5 sections, the reserve of roller shaft 4, and roller is when rotating around roller shaft 4, and the internal surface of roller 3 fully can contact the lubricant oil in reserve 5, and lubricant oil is brought to both contacting points, thus sufficient lubrication.
As shown in Figures 2 to 5, be preferred embodiment of the present utility model, the reserve 5 wherein on roller shaft 4 is formed by a planar horizontal cutting roller axle 4 being parallel to roller shaft 4 axis.The reserve 5 of this kind of structure is easy to process, low cost of manufacture.Accurately locate with longitudinal oil duct 6 of tappet body 1 for making the reserve 5 on roller shaft 4, reserve 5 has an opening end and closed end, opening end is concordant with the end face of the axial one end of roller shaft 4, the closed end of reserve 5 and roller shaft 4 are arranged with the end surfaces of one end, tappet body 1 is provided with and stretches into roller axis hole and the chuck 7 matched with roller shaft 4 reserve 5 opening end, thus the outer surface of the internal surface of roller axis hole and roller shaft 4 is fastened, roller shaft 4 progressively embeds from the roller axis hole side of tappet body 1 left end, chuck 7 is just in time stuck in reserve 5, can accurately locate by pair roller axle 4, reserve 5 and longitudinal oil duct 6 are correctly assembled, improve efficiency of assembling and precision.
As shown in Figure 6 and Figure 7, for another kind of embodiment of the present utility model, wherein reserve 5 is for being opened in the deep gouge on roller shaft 4, deep gouge is apart from roller shaft 4 left side certain distance, the left part of deep gouge is just to the outlet of longitudinal oil duct 6, deep gouge axially extends to roller shaft 4 end to right-hand member along roller shaft 4, thus make the right-hand member of deep gouge form opening end, meanwhile the roller axis hole of tappet body 1 right-hand member arranges the chuck 7 be suitable for mutually with deep gouge, roller shaft 4 progressively embeds from the roller axis hole side of tappet body 1 left end, chuck 7 is just in time stuck in deep gouge, can accurately locate by pair roller axle 4, deep gouge and longitudinal oil duct 6 are correctly assembled, improve efficiency of assembling and precision.
Reserve 5 also can along roller shaft 4 axially complete through setting, now the roller axis hole of tappet body 1 both sides need arrange the chuck 7 that adapts with reserve 5 to ensure the accurate location of reserve 5 and longitudinal oil duct 6 simultaneously, tappet body 1 manufacturing procedure of this kind of structure increases, and cost improves.
The structure of reserve 5 is not limited to aforementioned structure, as long as it axially arranges along roller shaft 4, have oil storage function.By arranging in tappet body 1 on longitudinal oil duct 6, roller shaft 4, reserve 5 is set, effectively can improve the lubrication circumstances of roller and roller shaft 4, both minimizings wear out failure probability of happening, by arranging boss in the side of tappet roller axis hole, the reserve 5 of roller shaft 4 is accurately located with longitudinal oil duct 6 of tappet body 1, reduces the manufacturing procedure in extra locating stud (or positioning screwn) hole.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model.Previous embodiment has been described in detail the utility model, and for a person skilled in the art, it still can be modified to the technological scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.In every case, within inventive concept scope of the present utility model, any amendment made, equivalent replacement, improvement etc., be all included within protection domain of the present utility model.
Claims (6)
1. a roller type tappet, comprise tappet body (1) and roller (3), described tappet body (1) is provided with roller axis hole, the roller shaft (4) be fixed on by roller (3) in tappet body (1) is fixed with in roller axis hole, described roller (3) and roller shaft (4) are rotationally connected, it is characterized in that being provided with the longitudinal oil duct (6) be communicated with roller axis hole by tappet inner chamber (2) in described tappet body (1), the oil outlet of the corresponding longitudinal oil duct (6) in surface of described roller shaft (4) offers the reserve (5) axially arranged along roller shaft (4).
2. roller type tappet according to claim 1, is characterized in that the axis of described longitudinal oil duct (6) and the axis being parallel of tappet body (1), and the axis of described longitudinal oil duct (6) is positioned at same plane with the axis of roller shaft (4) and mutually vertical.
3. roller type tappet according to claim 1, is characterized in that described roller (3) is arranged in reserve (5) section of roller shaft (4).
4. roller type tappet according to claim 1, is characterized in that described reserve (5) is for be formed by a planar horizontal cutting roller axle (4) being parallel to roller shaft (4) axis.
5. roller type tappet according to claim 1, is characterized in that described reserve (5) is for being opened in the deep gouge on roller shaft (4).
6. the roller type tappet according to claim 4 or 5, it is characterized in that described reserve (5) has an opening end and closed end, described opening end is concordant with the end face of roller shaft (4) axial one end, the closed end of described reserve (5) and roller shaft (4) are arranged with the end surfaces of one end, described tappet body (1) is provided with stretches into roller axis hole and the chuck (7) matched with roller shaft reserve (5) opening end, thus the internal surface of roller axis hole and the outer surface of roller shaft are fastened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420833732.4U CN204457902U (en) | 2014-12-25 | 2014-12-25 | Roller type tappet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420833732.4U CN204457902U (en) | 2014-12-25 | 2014-12-25 | Roller type tappet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204457902U true CN204457902U (en) | 2015-07-08 |
Family
ID=53664804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420833732.4U Expired - Fee Related CN204457902U (en) | 2014-12-25 | 2014-12-25 | Roller type tappet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204457902U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110312866A (en) * | 2017-02-21 | 2019-10-08 | 舍弗勒技术股份两合公司 | Method for producing a housing for a roller tappet |
| CN110552751A (en) * | 2019-09-18 | 2019-12-10 | 广西玉柴机器股份有限公司 | take lubricating structure's inside and outside roller type rocking arm |
-
2014
- 2014-12-25 CN CN201420833732.4U patent/CN204457902U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110312866A (en) * | 2017-02-21 | 2019-10-08 | 舍弗勒技术股份两合公司 | Method for producing a housing for a roller tappet |
| CN110312866B (en) * | 2017-02-21 | 2021-03-12 | 舍弗勒技术股份两合公司 | Method for producing a housing for a roller tappet |
| CN110552751A (en) * | 2019-09-18 | 2019-12-10 | 广西玉柴机器股份有限公司 | take lubricating structure's inside and outside roller type rocking arm |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |