CN106640249B - A kind of engine cam duplex helical gear transmission device - Google Patents
A kind of engine cam duplex helical gear transmission device Download PDFInfo
- Publication number
- CN106640249B CN106640249B CN201610875966.9A CN201610875966A CN106640249B CN 106640249 B CN106640249 B CN 106640249B CN 201610875966 A CN201610875966 A CN 201610875966A CN 106640249 B CN106640249 B CN 106640249B
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- Prior art keywords
- helical gear
- wheel hub
- hole
- duplex
- camshaft
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Classifications
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- 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
- F01L1/026—Gear drive
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- 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
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The invention belongs to field of mechanical technique, propose a kind of engine cam duplex helical gear transmission device.A kind of engine cam duplex helical gear transmission device proposed has the duplex helical gear being made of integrally formed large helical gear (1), bevel pinion (12)；Label has bit identification on the two neighboring helical teeth end face of large helical gear (1), one of helical teeth end face of bevel pinion (12) is also marked with 0 bit identification, and the angle of 0 bit identification and large helical gear (1) upper two 0 bit identification center lines is α on bevel pinion (12)；Duplex helical gear is provided centrally with wheel hub (5), and wheel hub (5) is bolted with duplex helical gear to be integrated；Camshaft (4) are installed in the central through hole of wheel hub (5)；It is equipped on the end face of camshaft alignment pin (10), and alignment pin (10) is located on large helical gear on the center line of two 0 bit identifications；Transmission device is additionally provided with thrust ring assemblies.The present invention has the characteristics that maintenanceability is good, connection is reliable and bearing capacity is high.
Description
Technical field
The invention belongs to field of mechanical technique, and in particular to a kind of engine cam duplex helical gear transmission device.
Background technique
Cam shaft gear is the important force transferring part of engine, it is the important bridge for connecting crankshaft and camshaft, one
On a little higher diesel engines of reinforcing degree, for cam shaft gear because to carry biggish power, operating condition is more severe, and convex
The quality of the mounting means of wheel shaft determines the working life of gear, and directly influences the whole aircraft reliability of engine；It is another
Aspect, since camshaft will transmit higher power, existing reinforcing h type engine h generallys use helical teeth wheel construction, this can not just keep away
Exempt from that gear can be made to generate axial thrust, how accurately to guarantee gear axial gap and overcome axial force to be working gear reliability
It is crucial；Therefore, the mounting means of engine cam shaft gear must science, reasonable and high reliablity.Available engine camshaft
The installation of gear generally uses the structure as shown in patent " camshaft and timing gears connection structure " (CN103967952), this
By being mounted on individually being bolted for centre between the cam shaft gear and camshaft of structure, due to by camshaft structure
Limitation, the diameter for connecting bolt should not be too large, this just makes single bolt bear biggish axial force, and bolt is for a long time in higher load
It is easy to produce loosening when working under lotus to be even broken, and course of work middle gear can have biggish swing, influence gear
Normal engagement；On the other hand, the axial thrust that cam shaft gear generates can make camshaft generate axial motion, it is necessary to install thrust
Ring needs to inspect periodically replacement since thrust ring is vulnerable part, and the thrust ring mentioned in foregoing invention is not installed on gear
End causes thrust ring disassembly extremely difficult.
Summary of the invention
In order to solve the above technical problems, the purpose of the present invention is to propose to a kind of transmissions of engine cam duplex helical gear to fill
It sets, makes it have the feature that maintenanceability is good, connection is reliable and bearing capacity is high.
The present invention, which adopts the following technical solutions, completes its invention task:
A kind of engine cam duplex helical gear transmission device, the transmission device have by integrally formed big oblique
The duplex helical gear that gear, bevel pinion are constituted；Large helical gear described in duplex helical gear with the bevel pinion is concentric sets
It sets, and the tooth form of large helical gear, bevel pinion described in duplex helical gear is left-handed；The two neighboring helical teeth end of large helical gear
Label has bit identification on face, and one of helical teeth end face of the bevel pinion is also marked with 0 bit identification, and bevel pinion
The angle of two 0 bit identification center lines is α on upper 0 bit identification and large helical gear, the angle α determine engine with gas phase
Position；The duplex helical gear is provided centrally with wheel hub, the wheel hub and the duplex helical gear be bolted for
One；The wheel hub is ladder shaft-like structure, and the center of wheel hub has the through-hole passed through to camshaft；The wheel hub
The installation camshaft in central through hole；The camshaft and the wheel hub are interference fitted, and the right end of the camshaft
Stretch out the wheel hub；There is positioning convex platform on the right end periphery of the camshaft；It is equipped on the end face of the camshaft
Alignment pin, and the alignment pin is located on large helical gear on the center line of two 0 bit identifications；The transmission device is also
It is provided with thrust ring assemblies；The thrust ring assemblies include positioning ring, thrust ring, plug and bolt；The positioning ring
It is nested on the camshaft, and is interference fitted with the camshaft；In the right end face and camshaft of the positioning ring
The positioning convex platform is in close contact, and has gap between the left end face of the positioning ring and the right end face of wheel hub；It is described
Thrust ring be semicircle ring structure, be filled between positioning ring and wheel hub, and be bolted on body.
The center of the duplex helical gear has the through-hole to install wheel hub, and the through-hole is ladder hole；Duplex
There are the multiple through-holes I being along the circumferential direction distributed on the end face of the helical gear ladder hole, and be located at two on large helical gear
The included angle of two through-holes I and two, 0 bit identification center line of a 0 bit identification two sides is different, and angle is respectively A, B.
The wheel hub is the ladder shaft-like structure being made of three sections of multi-diameter shafts, wherein left section of hardening on stepped shaft neck minimum, in
Between section multi-diameter shaft it is maximum；Match in the ladder hole gap being relatively large in diameter on the interlude multi-diameter shaft and duplex helical gear of wheel hub
It closes.
There are circumferential multiple lightening holes on the end face of the wheel hub.
On the wheel hub have multiple tapped through holes being along the circumferential direction distributed, and the tapped through hole on wheel hub with
Through-hole I on duplex helical gear corresponds.
The center of the thrust ring has the groove to avoid positioning ring；There is axial oilhole on the bottom surface of the groove
Ⅱ；The axial oilhole II is through-hole；Also there is the axial oilhole I for blind hole structure on the thrust ring；Described stops
Also there is the radial direction oil hole for blind hole structure on throw-out collar；The radial direction oil hole is connected with axial oilhole I, axial oilhole II respectively
It is logical；The open end of the radial direction oil hole is sealed by plug.
Have on the thrust ring there are two the stepped hole passed through to bolt, the thrust ring is tight by two bolts
Gu on body end face.
A kind of engine cam duplex helical gear transmission device proposed by the present invention, camshaft duplex helical gear is using whole
Body formula structure can process many loss of weight chambers compared with bolt connecting type structure on the inside of gear, gear weight mitigation is more,
This can mitigate the camshaft bearing close to gear end significantly for the engine using the installation of cam shaft gear cantilever
Load；Multiple connection bolt fastenings are used between camshaft duplex helical gear and wheel hub, compared with single bolt fastening, fastening is more
It is firm to add, and axial force suffered by single bolt is smaller, while avoiding the swing of gear during the work time；Camshaft duplex helical teeth
Wheel belt runner hub and positioning ring left and right vibration under the action of axial force, thrust ring is by the axial motion of camshaft duplex helical gear
In a certain range, thrust ring is divided into several shelves by thickness difference for amount limitation, and when installation can be matched, and the string quantity of motion of gear is controlled
In 0.1~0.25mm, engine can replace the thrust ring of suitable thickness, maintenance relatively aspect in overhaul according to abrasion condition；
Force feed mode is used between thrust ring and wheel hub, the oilhole on pressure machine oil slave body enters, and passes through the axis on thrust ring
To oilhole and radial direction oil hole, pressure lubrication oil is respectively delivered to the cooperation between thrust ring and positioning ring, thrust ring and wheel hub
On face, each matching surface is made adequately to be lubricated and be cooled down, extends the service life of thrust ring assemblies, pass gear train
It moves more reliable.
Detailed description of the invention
Fig. 1 is sectional arrangement drawing of the present invention.
Fig. 2 is the installation cross-sectional view of camshaft, wheel hub and positioning ring in the present invention.
Fig. 3 is the A-A cross-sectional view of Fig. 2.
Fig. 4 is the structural schematic diagram of thrust ring in the present invention.
Fig. 5 is the B-B cross-sectional view of Fig. 4.
In figure: 1, large helical gear；2, bolt；3, gasket；4, camshaft；5, wheel hub；6, body；7, positioning ring；8, thrust
Ring；9, bolt；10, alignment pin, 11, through-hole I；12, bevel pinion, 13, axial oilhole I；14, plug；15, radial direction oil hole；
16, axial oilhole II.
Specific embodiment
The present invention is illustrated with reference to the drawings and specific embodiments:
As shown in Figure 1, and combining Fig. 2, Fig. 3, a kind of engine cam duplex helical gear transmission device, the transmission
Device has the duplex helical gear being made of integrally formed large helical gear 1, bevel pinion 12；It is big oblique described in duplex helical gear
Gear 1 is arranged concentrically with the bevel pinion 12, and large helical gear 1, the tooth form of bevel pinion 12 described in duplex helical gear are equal
It is left-handed；Label has a bit identification on the two neighboring helical teeth end face of the large helical gear 1, and wherein the one of the bevel pinion 12
A helical teeth end face is also marked with 0 bit identification, and on bevel pinion 12 on 0 bit identification and large helical gear 1 in two 0 bit identifications
The angle of heart line is α, and the angle α determines the port timing of engine；The center of the duplex helical gear has to install wheel hub 5
Through-hole, the through-hole be ladder hole；Have on the end face of the ladder hole of duplex helical gear and along the circumferential direction divides
Six through-holes I 11 of cloth, and it is located at two through-holes I 11 of two 0 bit identification two sides and two 0 bit identification centers on large helical gear
The included angle of line is different, and angle is respectively A, B, and the included angle between four additional through-hole I 11 is identical；
The duplex helical gear is provided centrally with wheel hub 5, and the wheel hub 5 and the duplex helical gear pass through bolt
It is connected as one；The wheel hub 5 is ladder shaft-like structure, and the center of wheel hub 5 has the through-hole passed through to camshaft 4；
The installation camshaft 4 in the central through hole of the wheel hub 5；The camshaft 4 is interference fitted with the wheel hub 5, and institute
The right end for stating camshaft 4 stretches out the wheel hub 5；There is positioning convex platform on the right end periphery of the camshaft 4；The cam
Alignment pin 10 is installed, and the alignment pin 10 is located at the center of two 0 bit identifications on large helical gear on the end face of axis
On line；The transmission device is additionally provided with thrust ring assemblies；The thrust ring assemblies include positioning ring 7,8 and of thrust ring
Bolt；The positioning ring 7 is nested on the camshaft 4, and is interference fitted with the camshaft 4；The positioning ring 7
Right end face and camshaft on the positioning convex platform be in close contact, the left end face of the positioning ring 7 and the right side of wheel hub 5
There is gap between end face；The thrust ring 9 is semicircle ring structure, is filled between positioning ring 7 and wheel hub 8, and pass through spiral shell
Bolt 9 is fixed on body 6.
The wheel hub 5 is the ladder shaft-like structure being made of three sections of multi-diameter shafts, wherein left section of hardening on stepped shaft neck minimum,
Interlude multi-diameter shaft is maximum；Match in the ladder hole gap being relatively large in diameter on the interlude multi-diameter shaft and duplex helical gear of wheel hub
It closes.
There are circumferential multiple lightening holes 6 on the end face of the wheel hub 5.
There is multiple tapped through holes being along the circumferential direction distributed, and the tapped through hole on wheel hub on the wheel hub 5
It is corresponded with the through-hole I 11 on duplex helical gear.
In conjunction with Fig. 4, Fig. 5, the center of the thrust ring 8 has the groove to avoid positioning ring；The bottom surface of the groove
It is upper that there is axial oilhole II 16；The axial oilhole II 16 is through-hole；Also have on the thrust ring for blind hole structure
Axial oilhole I 13；Also there is the radial direction oil hole 15 for blind hole structure on the thrust ring；The radial direction oil hole 15 respectively with
Axial oilhole I 13, axial oilhole II 16 are connected；The open end of the radial direction oil hole 14 is sealed by plug 14.
Have on the thrust ring 8 there are two the stepped hole passed through to bolt, the thrust ring passes through two bolts
It is fastened on body end face.
After wheel hub 5 and 4 interference of camshaft are installed, on the basis of the alignment pin 10, it is located at alignment pin 10 big oblique
On gear on the center line of two 0 bit identifications；Six tapped through holes, six threaded holes on wheel hub 5 are processed on 5 end face of wheel hub
Respectively with six I 11 faces of through-hole on camshaft duplex helical gear 1, and by six bolts 2 and gasket 3 by camshaft duplex
Helical gear 1 and wheel hub 5 tighten together.
A kind of engine cam duplex helical gear transmission device installation method of the present invention: first by 5 mistake of wheel hub
It is full of and is mounted on camshaft 4,6 tapped through holes is processed on 5 end face of wheel hub；Thrust ring 8 is fastened on body 6 with 2 bolts 9
On, then by 6 tapped through hole faces on 6 through-holes and wheel hub 5 on camshaft duplex helical gear 1, with 62 Hes of bolt
Camshaft duplex helical gear 1 is fastened on wheel hub 5 by gasket 3, disk moving cam axis 4, and the axial string momentum a of measurement camshaft 4 is
It is no to meet the requirements.
A kind of engine cam duplex helical gear gear lubrication principle of the present invention: pressure machine oil slave body
Oilhole on 6 flows into the axial oilhole I 13 on thrust ring 8, enters axial oilhole II 16 through radial direction oil hole I 15, passes through axial oil
Hole II 16 respectively enters matching for the right end face of thrust ring 8 and the mating surface of positioning ring and the left end face of thrust ring 8 and wheel hub 5
The lubrication of each mating area is realized in conjunction face.
Claims (7)
1. a kind of engine cam duplex helical gear transmission device, it is characterised in that: the transmission device has by one
The duplex helical gear that molding large helical gear (1), bevel pinion (12) are constituted；Large helical gear described in duplex helical gear (1) with
The bevel pinion (12) is arranged concentrically, and the tooth form of large helical gear described in duplex helical gear (1), bevel pinion (12) is
It is left-handed；Label has bit identification on the two neighboring helical teeth end face of large helical gear (1), and the bevel pinion (12) is wherein
One helical teeth end face is also marked with 0 bit identification, and 0 bit identification and large helical gear (1) upper two 0 on bevel pinion (12)
The angle for identifying center line is α, and the angle α determines the port timing of engine；The duplex helical gear is provided centrally with wheel hub
(5), the wheel hub (5) is bolted with the duplex helical gear is integrated；The wheel hub (5) is ladder shaft-like
Structure, and the center of wheel hub (5) has the through-hole passed through to camshaft (4)；Institute is installed in the central through hole of the wheel hub (5)
The camshaft (4) stated；The camshaft (4) and the wheel hub (5) are interference fitted, and the right end of the camshaft (4) stretches out
The wheel hub (5)；There is positioning convex platform on the right end periphery of the camshaft (4)；It is installed on the end face of the camshaft
Have alignment pin (10), and the alignment pin (10) is located on large helical gear on the center line of two 0 bit identifications；Described
Transmission device is additionally provided with thrust ring assemblies；The thrust ring assemblies include positioning ring (7), thrust ring (8) and bolt；
The positioning ring (7) is nested on the camshaft (4), and is interference fitted with the camshaft (4)；The positioning ring
(7) positioning convex platform is in close contact in right end face and camshaft, the left end face and wheel hub of the positioning ring (7)
(5) there is gap between right end face；The thrust ring (8) is semicircle ring structure, is filled in positioning ring (7) and wheel hub
(5) it between, and is bolted on body (6).
2. a kind of engine cam duplex helical gear transmission device as described in claim 1, it is characterised in that: the duplex
Helical gear center has the through-hole to install wheel hub (5), and the through-hole is ladder hole；The rank of duplex helical gear
There are the multiple through-holes I (11) being along the circumferential direction distributed on the end face of terraced through-hole, and be located at two 0 bit identifications two on large helical gear
Two through-holes I (11) of side are different from the included angle of two 0 bit identification center lines, and angle is respectively A, B.
3. a kind of engine cam duplex helical gear transmission device as described in claim 1, it is characterised in that: the wheel
Hub (5) is the ladder shaft-like structure being made of three sections of multi-diameter shafts, wherein left section of hardening on stepped shaft neck minimum, interlude multi-diameter shaft is most
Greatly；The ladder hole clearance fit being relatively large in diameter on the interlude multi-diameter shaft and duplex helical gear of wheel hub.
4. a kind of engine cam duplex helical gear transmission device as described in claim 1, it is characterised in that: the wheel hub
(5) there are circumferential multiple lightening holes on end face.
5. a kind of engine cam duplex helical gear transmission device as described in claim 1, it is characterised in that: the wheel
There are multiple tapped through holes being along the circumferential direction distributed, and on the tapped through hole on wheel hub and duplex helical gear on hub (5)
Through-hole I (11) correspond.
6. a kind of engine cam duplex helical gear transmission device as described in claim 1, it is characterised in that: the thrust
The center of ring (8) has the groove to avoid positioning ring；There is axial oilhole II (16) on the bottom surface of the groove；Described
Axial oilhole II (16) is through-hole；Also there is the axial oilhole I (13) for blind hole structure on the thrust ring；The thrust
Also there is the radial direction oil hole (15) for blind hole structure on ring；The radial direction oil hole (15) respectively with axial oilhole I (13), axial
Oilhole II (16) is connected；The open end of the radial direction oil hole (15) is sealed by plug (14).
7. a kind of engine cam duplex helical gear transmission device as described in claim 1, it is characterised in that: described stops
Have on throw-out collar (8) there are two the stepped hole passed through to bolt, the thrust ring passes through two bolt fastenings in body end face
On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610875966.9A CN106640249B (en) | 2016-11-17 | 2016-11-17 | A kind of engine cam duplex helical gear transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610875966.9A CN106640249B (en) | 2016-11-17 | 2016-11-17 | A kind of engine cam duplex helical gear transmission device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106640249A CN106640249A (en) | 2017-05-10 |
| CN106640249B true CN106640249B (en) | 2019-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610875966.9A Active CN106640249B (en) | 2016-11-17 | 2016-11-17 | A kind of engine cam duplex helical gear transmission device |
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| CN (1) | CN106640249B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108044324A (en) * | 2017-12-17 | 2018-05-18 | 江苏威鹰机械有限公司 | Automatic gearbox sun gear manufacturing process and its cold forging Extruding die |
| CN108915814B (en) * | 2018-08-28 | 2023-10-20 | 河南柴油机重工有限责任公司 | Cam shaft driving device of common rail diesel engine |
| CN111140348A (en) * | 2019-10-09 | 2020-05-12 | 河南柴油机重工有限责任公司 | Intermediate gear transmission device of sea water pump driven by diesel engine |
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| EP0741235A2 (en) * | 1995-05-04 | 1996-11-06 | Ford Motor Company Limited | Dual output camshaft phase controller |
| US5673659A (en) * | 1995-06-22 | 1997-10-07 | Chrysler Corporation | Lead screw driven shaft phase control mechanism |
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| CN204458784U (en) * | 2014-12-22 | 2015-07-08 | 潍柴动力股份有限公司 | A kind of camshaft thrust structure |
| CN105298571A (en) * | 2015-11-29 | 2016-02-03 | 重庆元创汽车整线集成有限公司 | Axial limiting structure for cam shaft |
| CN206205945U (en) * | 2016-11-17 | 2017-05-31 | 河南柴油机重工有限责任公司 | A kind of engine cam duplex helical gear transmission device |
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- 2016-11-17 CN CN201610875966.9A patent/CN106640249B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0741235A2 (en) * | 1995-05-04 | 1996-11-06 | Ford Motor Company Limited | Dual output camshaft phase controller |
| US5673659A (en) * | 1995-06-22 | 1997-10-07 | Chrysler Corporation | Lead screw driven shaft phase control mechanism |
| CN201090253Y (en) * | 2007-08-23 | 2008-07-23 | 重庆建设摩托车股份有限公司 | Distribution transmission mechanism of motorcycle engine |
| CN104214206A (en) * | 2014-08-28 | 2014-12-17 | 河南柴油机重工有限责任公司 | Thrust device of engine camshaft |
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| CN105298571A (en) * | 2015-11-29 | 2016-02-03 | 重庆元创汽车整线集成有限公司 | Axial limiting structure for cam shaft |
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| CN106640249A (en) | 2017-05-10 |
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