CN203515707U - Air valve bridge and guiding device thereof - Google Patents
Air valve bridge and guiding device thereof Download PDFInfo
- Publication number
- CN203515707U CN203515707U CN201320612150.9U CN201320612150U CN203515707U CN 203515707 U CN203515707 U CN 203515707U CN 201320612150 U CN201320612150 U CN 201320612150U CN 203515707 U CN203515707 U CN 203515707U
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- Prior art keywords
- air valve
- valve bridge
- pontic
- guiding device
- guiding
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- 239000000446 fuel Substances 0.000 claims description 8
- 230000007935 neutral effect Effects 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 2
- 239000003921 oil Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 231100000518 lethal Toxicity 0.000 description 1
- 230000001665 lethal effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
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- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The utility model discloses an air valve bridge and a guiding device thereof. Side protrusions used for guiding up-and-down reciprocating movement of a bridge body and limiting rotating movement of the bridge body are arranged on the side portions of the air valve bridge. Guiding protrusions matched with the outer side faces of the side protrusions of the air valve bridge in shape are arranged on the guiding device. Guiding holes of the guiding device and the guiding protrusions of the guiding device guarantee that the air valve bridge can only perform up-and-down movement and cannot perform rotating movement. Although the part, making contact with the air valve bridge, of a rocker arm moves horizontally when the rocker arm performs reciprocating rotating movement around a rocker arm shaft and the air valve bridge has to bear horizontal acting force, the horizontal acting force borne by the air valve bridge can be transmitted to an air cylinder cover due to the fact that guiding rods of the air valve bridge are inserted into the guiding holes of the guiding device and the guiding device is connected with the air cylinder cover. Thus, the situation that the acting force is transmitted to an air valve guide pipe through the air valve bridge and an air valve is avoided and the risk that the air valve guide pipe is abraded is lowered.
Description
Technical field
The utility model relates to a kind of air valve bridge and guiding device thereof.
Background technique
Along with scientific and technological development, the lasting progress of engine technology, and the requirement of environmental protection, produced many Valves Technology.This just structurally requires rocking arm can control a plurality of valves of the same name simultaneously.Existing four-valve engine, every cylinder all comprises two intake valves and two exhaust valves, and for the diesel engine of large discharge capacity, great majority adopt OHV to promote rocking arm by tappet, push rod, by rocking arm, drive air valve bridge again, by air valve bridge, synchronously drive valve.In complicated engine valve actuating mechanism motion, when parts depreciations such as cam, push rod, rocking arm, valves, valve clearance increases to certain value, and air valve bridge will be thrown out of, come off; When causing frictional force, valve stem carbon distribution increases, or oil pump is worn and torn, oil duct is stopped up and causes the not enough valve insufficient lubrication of engine oil supplying by grease, cause that air valve drop lags behind than rocking arm, the distance between valve and rocking arm is increased to certain value, and air valve bridge also can be thrown out of, come off; In a word, existing air valve bridge all exists the distance that may cause between valve and rocking arm surprisingly to increase factor in links such as design, manufacture, use and maintenance maintenances, and air valve bridge exists the possibility that is thrown out of, comes off.Once air valve bridge comes off, can cause motor generation catastrophe failure, the lethal fault of unrepairable even occurs.In addition, air valve bridge and valve are plane contact, and this is just very strict to the geometrical and toleranging required precision of air valve bridge.If there is radial force to the power of valve stem effect in air valve bridge, will cause the wearing and tearing aggravation of valve guide bushing and valve stem, cause mechanism's life-span to reduce.Therefore, how guarantee, on the basis that valve of the same name is opened and closed, to improve reliability of structure simultaneously simultaneously, reduce the complexity of structure, just become the current technical issues that need to address of those skilled in the art.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of air valve bridge and guiding device thereof.
For solving the problems of the technologies described above, air valve bridge comprises pontic, the two ends of pontic are respectively equipped with valve stem attachment hole, the end face of pontic is provided with the boss for being connected with rocking arm, its structural feature is that the bottom surface of pontic is provided with down the guide rod of stretching, and the sidepiece of described pontic is provided with for pontic is pumped and leads, it is rotatablely moved to carry out spacing side protruding.
The protruding outer side surface of described side is cambered surface.
The moulding of described air valve bridge integrally casting.
Described guide rod and boss are coaxially set, and it is all arranged on the neutral position of pontic.
Described guide rod is hollow structure.
Described valve stem attachment hole comprises and is arranged on the counterbore of pontic left end bottom surface and is arranged on pontic right-hand member and runs through the tapped hole of pontic.
For the guiding device that air valve bridge is led, its structural feature is that it comprises the guiding body that is provided with mounting hole, on described guiding body, be arranged with two for the pilot hole of plug-in mounting guide rod, described guiding body is provided with the guide protrusions that the outer side surface shape protruding with air valve bridge side matches.
The centre of described guiding body is provided with the screw thread for fixing fuel injector that runs through the body that leads and is fixedly mounted with hole.
Thereby the bottom of described guiding body is provided with for being inserted into the ring-type convex of location, cylinder cap fuel injector hole.
Adopt after said structure, two intake valves of same cylinder are connected with air valve bridge respectively with two exhaust valves, the guide rod of two air valve bridges inserts respectively in the pilot hole of guiding device, thereby guiding device is fixed in cylinder head by bolt is set in mounting hole, in working procedure, the rocking arm of motor, by air valve bridge, is passed to power at the valve of motor, valve is pumped under the acting in conjunction of above-mentioned active force and Returnning spring, realize the opening and closing of valve.The pilot hole of guiding device and guide protrusions have guaranteed that air valve bridge can only move up and down, and can not rotatablely move.Although rocking arm is being done around pitman arm shaft in the process of crankmotion; rocking arm and air valve bridge contact position have the displacement of substantially horizontal; thus make air valve bridge bear horizontal force;; because the guide rod of air valve bridge is inserted in the pilot hole of guiding device, guiding device is connected with cylinder cap, and the transverse force that therefore air valve bridge can be born is passed to cylinder head; avoided active force to be passed to valve guide bushing by air valve bridge and valve, reduces the risk of valve guide bushing wearing and tearing.In addition, this guiding device is provided with screw thread and is fixedly mounted with hole, overlaps loading nut on oil sprayer, and nut is fixedly mounted with being threaded of hole with screw thread, thus fixing fuel injector, and this is the additional function of this guiding device, is convenient to the assembling of oil sprayer.
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 air valve bridge;
Fig. 2 is the plan view of Fig. 1;
Fig. 3 is the perspective view of Fig. 1;
Fig. 4 is the second embodiment of air valve bridge;
Fig. 5 is the third embodiment of air valve bridge;
Fig. 6 is the structural representation of guiding device;
Fig. 7 is the schematic diagram that Fig. 6 analyses and observe along A-A line;
Fig. 8 is the structural representation that air valve bridge is connected with guiding device.
Embodiment
As shown in Figure 1 to Figure 3, air valve bridge comprises pontic, the two ends of pontic are respectively equipped with valve stem attachment hole, valve stem attachment hole comprises and is arranged on the counterbore 5 of pontic left end bottom surface and is arranged on pontic right-hand member and runs through the tapped hole 4 of pontic, insert in counterbore 5 at valve stem 12 tops of a valve in valve of the same name, with the upper plane contact of counterbore 5, realize the active force of rocking arm to the transmission of this valve; In tapped hole 4, being provided with lower end is the screw 13 of plane, by adjustment, be positioned at the locking nut 14 at screw 13 tops, the position that screw 13 is adjusted in locking makes the lower end of screw 13 contact with the top planes of the valve stem 12 of another valve in valve of the same name, by adjusting screw 13 and locking nut 14, regulate the position of this valve, realize the force transmission of rocking arm to this valve.The neutral position of pontic end face is provided with the boss 1 for being connected with rocking arm, the neutral position of pontic bottom surface is provided with down the guide rod 2 of stretching, guide rod 2 is coaxially set with boss 1, guide rod 2 is hollow structure, be that it is hollow, can alleviate the weight of part like this, the sidepiece of pontic is provided with for pontic is pumped and leads, it is rotatablely moved and carries out spacing side protruding 3, the cambered surface that in the present embodiment, the outer side surface of side protruding 3 is indent, i.e. the outer side of side protruding 3 projections at horizontal plane is the arc of indent.Protruding 3 outer side surfaces of side also can be other irregular shapes, as be the cambered surface of evagination, wavy surface as shown in Figure 4 or be that two vertical planes intersect to form as shown in Figure 5, in the utility model, the shape of protruding 3 outer side surfaces of side is not limited to above shape, as long as can guarantee that air valve bridge can move up and down and not produce interference along guiding device, and prevent its rotation.Aforementioned air valve bridge is integrated casting, can better improve the reliability of air valve bridge.
As shown in Figure 6 and Figure 7, for the guiding device that air valve bridge is led, it comprises the guiding body 6 that is arranged with two mounting holes 8, on guiding body 6, be arranged with two for the pilot hole 7 of plug-in mounting guide rod 2, the line of centers of two pilot holes 7 is mutually vertical with the line of centers of two mounting holes 8, and the center superposition of two line of centers, guiding body 6 upper surfaces are provided with the guide protrusions 9 matching with the outer side surface shape of air valve bridge side protruding 3, guide protrusions 9 is two, its next-door neighbour's pilot hole 7 arranges, guide protrusions 9 has certain altitude, adapt with the displacement that moves up and down of air valve bridge, the centre of guide protrusions 9 is provided with breach, facilitate machining screw to be fixedly mounted with hole 10.The outer side surface shape of guide protrusions 9 matches with the outer side surface shape of side protruding 3, makes bi-side just in time bonded to each other, and in the present embodiment, the outer side surface of guide protrusions 9 is also curved.When guiding device and air valve bridge assembling, the distance between guide protrusions 9 and side protruding 3 is preferably disposed on 0.05～0.1mm.The centre of guiding body 6 is provided with the screw thread for fixing fuel injector that runs through the body 6 that lead and is fixedly mounted with hole 10, and screw thread is fixedly mounted with hole 10 and adapts with the nut that oil sprayer is set with.Thereby the bottom of guiding body 6 is provided with for being inserted into the ring-type convex 11 of location, cylinder cap fuel injector hole, and ring-type convex 11 is fixedly mounted with hole 10 with screw thread and is coaxially set.
As shown in Figure 8, two intake valves of same cylinder are connected with air valve bridge respectively with two exhaust valves, the guide rod 2 of two air valve bridges inserts respectively in the pilot hole 7 of guiding device, thereby guiding device is by being fixed in cylinder head at the interior bolt 15 that arranges of mounting hole 8, in working procedure, the rocking arm of motor, by air valve bridge, is passed to power at the valve of motor, valve is pumped under the acting in conjunction of above-mentioned active force and Returnning spring, realize the opening and closing of valve.The pilot hole 7 of guiding device and guide protrusions 9 have guaranteed that air valve bridge can only move up and down, and can not rotatablely move.Although rocking arm is being done around pitman arm shaft in the process of crankmotion; rocking arm and air valve bridge contact position have the displacement of substantially horizontal; thus make air valve bridge bear horizontal force;; because the guide rod 2 of air valve bridge is inserted in the pilot hole 7 of guiding device; guiding device is connected with cylinder cap; the transverse force that therefore air valve bridge can be born is passed to cylinder head; avoided active force to be passed to valve guide bushing by air valve bridge and valve; reduce the risk of valve guide bushing wearing and tearing, improve whole distribution device functional reliability.In addition, this guiding device is provided with screw thread and is fixedly mounted with hole 10, overlaps loading nut on oil sprayer, and nut is fixedly mounted with being threaded of hole 10 with screw thread, thus fixing fuel injector, and this is the additional function of this guiding device, is convenient to the assembling of oil sprayer.
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, its technological scheme that still can record aforementioned each embodiment is modified, or part technical characteristics is wherein equal to replacement.In every case within inventive concept scope of the present utility model, any modification of making, be equal to replacement, improvement etc., within being all included in protection domain of the present utility model.
Claims (9)
1. an air valve bridge, comprise pontic, the two ends of pontic are respectively equipped with valve stem attachment hole, the end face of pontic is provided with the boss (1) for being connected with rocking arm, the bottom surface that it is characterized in that pontic is provided with down the guide rod (2) of stretching, and the sidepiece of described pontic is provided with for pontic is pumped and leads, it is rotatablely moved and carries out spacing side protruding (3).
2. air valve bridge according to claim 1, the outer side surface that it is characterized in that described side protruding (3) is cambered surface.
3. air valve bridge according to claim 2, is characterized in that the moulding of described air valve bridge integrally casting.
4. air valve bridge according to claim 3, is characterized in that described guide rod (2) and boss (1) are coaxially set, and it is all arranged on the neutral position of pontic.
5. air valve bridge according to claim 4, is characterized in that described guide rod (2) is hollow structure.
6. according to the air valve bridge described in claim 1 to 5 any one, it is characterized in that described valve stem attachment hole comprises be arranged on the counterbore (5) of pontic left end bottom surface and be arranged on pontic right-hand member and run through the tapped hole (4) of pontic.
7. the guiding device for air valve bridge claimed in claim 1 is led, it is characterized in that it comprises the guiding body (6) that is provided with mounting hole (8), on described guiding body (6), be arranged with two pilot holes for plug-in mounting guide rod (2) (7), described guiding body (6) is provided with the guide protrusions (9) matching with the outer side surface shape of air valve bridge side protruding (3).
8. guiding device according to claim 7, the centre that it is characterized in that described guiding body (6) is provided with the screw thread for fixing fuel injector that runs through guiding body (6) and is fixedly mounted with hole (10).
9. guiding device according to claim 8, it is characterized in that described guiding body (6) thus bottom be provided with for being inserted into the ring-type convex (11) of location, cylinder cap fuel injector hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320612150.9U CN203515707U (en) | 2013-10-07 | 2013-10-07 | Air valve bridge and guiding device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320612150.9U CN203515707U (en) | 2013-10-07 | 2013-10-07 | Air valve bridge and guiding device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203515707U true CN203515707U (en) | 2014-04-02 |
Family
ID=50374652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320612150.9U Expired - Lifetime CN203515707U (en) | 2013-10-07 | 2013-10-07 | Air valve bridge and guiding device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203515707U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020097242A1 (en) * | 2018-11-06 | 2020-05-14 | Jacobs Vehicle Systems, Inc. | Valve bridge systems comprising valve bridge guide |
| US11053819B2 (en) | 2018-11-06 | 2021-07-06 | Jacobs Vehicle Systems, Inc. | Valve bridge systems comprising valve bridge guide |
| US11319842B2 (en) | 2018-11-06 | 2022-05-03 | Jacobs Vehicle Systems, Inc. | Valve bridge comprising concave chambers |
-
2013
- 2013-10-07 CN CN201320612150.9U patent/CN203515707U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020097242A1 (en) * | 2018-11-06 | 2020-05-14 | Jacobs Vehicle Systems, Inc. | Valve bridge systems comprising valve bridge guide |
| US10883392B2 (en) | 2018-11-06 | 2021-01-05 | Jacobs Vehicle Systems, Inc. | Valve bridge systems comprising valve bridge guide |
| CN112955632A (en) * | 2018-11-06 | 2021-06-11 | 雅各布斯车辆系统公司 | Valve bridge system comprising a valve bridge guide |
| US11053819B2 (en) | 2018-11-06 | 2021-07-06 | Jacobs Vehicle Systems, Inc. | Valve bridge systems comprising valve bridge guide |
| US11319842B2 (en) | 2018-11-06 | 2022-05-03 | Jacobs Vehicle Systems, Inc. | Valve bridge comprising concave chambers |
| CN112955632B (en) * | 2018-11-06 | 2022-09-16 | 雅各布斯车辆系统公司 | Valve bridge system comprising a valve bridge guide |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |
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| CX01 | Expiry of patent term |