CN103398086A - Front structure of engine crankshaft - Google Patents
Front structure of engine crankshaft Download PDFInfo
- Publication number
- CN103398086A CN103398086A CN2013102717156A CN201310271715A CN103398086A CN 103398086 A CN103398086 A CN 103398086A CN 2013102717156 A CN2013102717156 A CN 2013102717156A CN 201310271715 A CN201310271715 A CN 201310271715A CN 103398086 A CN103398086 A CN 103398086A
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- engine crankshaft
- crankshaft front
- oil pump
- vibration damper
- gear
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a front structure of an engine crankshaft. The front structure of the engine crankshaft comprises an engine crankshaft front end; a timing gear, which is sleeved on the innermost end of the engine crankshaft front end by interference fit; a lubricating oil pump gear, which is tightly close to the timing gear, is sleeved on the engine crankshaft front end by interference fit, and comprises a medium lubricating oil pump gear body, a timing gear sleeve gasket at an internal end and a belt pulley sleeve gasket at an external end which are integrated; and a vibration damper, which is sleeved on the external side of the belt pulley sleeve gasket of the lubricating oil pump gear, and is axially fixed by bolts. The structure, without changing the external diameter of the crankshaft front end, enables the engine front end to transmit larger torque, ensures work reliability of an engine crankshaft end, and avoids faults that the engine crankshaft front end fractures when suffering from large torque or fastening bolts fracture when suffering from very large force. Furthermore, the engine crankshaft front structure is more compact, and retrenches and integrates parts, thereby reduce manufacturing and maintaining cost.
Description
Technical field
The present invention relates to engine art, particularly a kind of engine crankshaft front-end architecture.
Background technique
There is now engine crankshaft generally to be divided into the bent axle CONCENTRIC REDUCER, stub end is the motor output terminal, little head end (engine crankshaft front end) is generally each movement parts power end of motor, bent axle microcephaly's timing gear and oil pump gear transmitting torque is fixed in dependence, the bent axle microcephaly simultaneously also can mounting dampers, reduces engine luggine or by the external outputting power of race on vibration damper.
As shown in Figure 1, timing gear 11 and oil pump gear 12 are set on engine crankshaft front end 14 successively across timing gear spacer 13, and by the first flat key 15, with its key, are connected.Vibration damper 16 is set in engine crankshaft front end 14 outer ends with oil pump gear 12 across belt pulley spacer 17, and by the second flat key 18, with its key, is connected, and locks along engine crankshaft front end 14 axis by lock bolt 19 again.
For meeting the installation of each part that depends on engine crankshaft front end 14, the little head end of bent axle generally need process the keyway that meets timing gear and oil pump gear installation, meets the tapped hole that vibration damper is installed.due to the general integrated a large amount of parts of motor head, structure and bulk require compact, each part also has the requirement of a constant-speed ratio simultaneously, the boundary dimension that has just limited timing gear can not be excessive, the excessive boundary dimension of timing gear can affect the motor head integral arrangement, the restriction of timing gear boundary dimension has also limited the external diameter of the little head end of bent axle, the lock bolt tapped hole of mounting dampers needs to process on the crankshaft end of restriction, also brought simultaneously problem, when motor head need to be exported a relatively high power, the lock bolt diameter of thread of mounting dampers there will be the lock bolt fracture defect when too small, when the lock bolt diameter of thread of mounting dampers is excessive, the lock bolt tapped hole sidewall attenuation of engine crankshaft front end 14, there will be again bent axle microcephaly fracture defect.
Summary of the invention
The present invention is in order to overcome defect in above-mentioned prior art, a kind of compact structure is provided, under the prerequisite that does not change the crankshaft front end external diameter, make motor head can pass out more high pulling torque, and guaranteed the engine crankshaft front-end architecture of engine crankshaft end functional reliability.
, for achieving the above object,, according to the invention provides a kind of engine crankshaft front-end architecture, comprising:
The engine crankshaft front end;
Timing gear, interference are set in engine crankshaft front end inner terminal;
Oil pump gear, next-door neighbour's timing gear, interference are set in the engine crankshaft front end, and it comprises integrated middle part oil pump gear body, inner timing gear spacer and outer end belt pulley spacer;
Vibration damper, be set in the belt pulley spacer outer end of oil pump gear, and pass through the bolt axial restraint.
In technique scheme, the engine crankshaft front end relies on described timing gear and oil pump gear transmitting torque, and vibration damper is for reducing engine luggine or by the external outputting power of race on vibration damper.
In technique scheme, the outer end end face of oil pump gear circumferentially offers a plurality of installation screws, and vibration damper axially is screwed in a plurality of installation screws and is fixed respectively by a plurality of bolts.
In technique scheme, bolt is the outer-hexagonal hook bolt.
In technique scheme, the outer end end face of oil pump gear also offers positioning pin hole, after vibration damper positions to the insertion positioning pin hole by alignment pin, then by bolt, is fixed.
In technique scheme, locating stud is pin.
compared with prior art, the present invention has following beneficial effect: this engine crankshaft front-end architecture is cancelled processing keyway and vibration damper installation tapped hole is installed, timing gear are installed by former keyway arrangements and are improved to the interference fit connection, oil pump gear and belt pulley spacer are integrated, and with vibration damper, be connected, use vibration damper needn't be installed on the little head end of bent axle, vibration damper flat key and clamping bolt mounting structure have been changed, under the prerequisite that does not change the crankshaft front end external diameter, make motor head can pass out more high pulling torque, and guaranteed the engine crankshaft end functional reliability, avoided the engine crankshaft front end impacted and fault or the stressed fault of crossing major rupture of clamping bolt of fracture by high pulling torque.In addition, the engine crankshaft front-end architecture is more compact, and part is simplified integration, thereby has reduced manufacturing and maintenance cost.
Description of drawings
Fig. 1 is the schematic diagram of available engine crankshaft front end structure;
Fig. 2 is the schematic diagram of engine crankshaft front-end architecture of the present invention;
Description of drawings:
The 11-timing gear, 12-oil pump gear, 13-timing gear spacer, 14-engine crankshaft front end, 15-the first flat key, 16-vibration damper, 17-belt pulley spacer, 18-the second flat key, 19-lock bolt, 21-engine crankshaft front end, the 22-timing gear, 23-oil pump gear, 24-vibration damper, the 25-locating stud, the 26-bolt.
Embodiment
, below in conjunction with accompanying drawing, a specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention is not subjected to the restriction of embodiment.It will be appreciated that, mentioned in following mode of execution of the present invention " on ", D score, " left side ", " right side ", " front " and " reverse side " be all take the direction shown in each figure as benchmark, these words that are used for limiting direction are only for convenience of explanation, do not represent the restriction to the concrete technological scheme of the present invention.
engine crankshaft front-end architecture of the present invention is cancelled processing keyway and vibration damper installation tapped hole is installed, timing gear are installed by former keyway arrangements and are improved to the interference fit connection, oil pump gear and belt pulley spacer are integrated, and with vibration damper, be connected, use vibration damper needn't be installed on the little head end of bent axle, vibration damper flat key and clamping bolt mounting structure have been changed, under the prerequisite that does not change the crankshaft front end external diameter, make motor head can pass out more high pulling torque, and guaranteed the engine crankshaft end functional reliability, avoided the engine crankshaft front end impacted and fault or the stressed fault of crossing major rupture of clamping bolt of fracture by high pulling torque.In addition, the engine crankshaft front-end architecture is more compact, and part is simplified integration, thereby has reduced manufacturing and maintenance cost.
Below detailed description by way of example but unrestriced mode has illustrated the disclosure, should be understood that various aspect of the present disclosure can be by independent realization or the realization of with other aspects, being combined.This specification clearly enables those skilled in the art to make and uses us to believe for new and non-obvious improvement, describe some embodiments, alternative, modification, alternative and system applies, comprised the current best mode that is considered to carry out the inventive principle of describing in this specification.When describing element or feature and/or embodiment, titled with " one " " one " " being somebody's turn to do " and " described ", be intended to represent to have one or more in element or feature.Term " comprises " that " comprising " and " having " is intended to is comprising property, and also has extra element or feature beyond being illustrated in those specifically described elements or feature.
As shown in Figure 2, this engine crankshaft front-end architecture is cancelled the fastening screw pit of keyway and mounting dampers, and its improvement has increased the intensity of crankshaft front end, while making its output high pulling torque, guarantees that still reliable in structure is stable.This engine crankshaft front-end architecture specifically comprises: engine crankshaft front end 21, and be arranged on respectively timing gear 22, oil pump gear 23 and vibration damper 24 on this engine crankshaft front end 21.Engine crankshaft front end 21 relies on timing gear 22 and oil pump gear 23 transmitting torques, and vibration damper 24 reduces engine luggines or by the external outputting power of race on vibration damper.
Engine crankshaft front end 21 has been cancelled the keyway that coordinates with vibration damper, timing gear and oil pump gear key, and the fastening screw pit of mounting dampers, this improvement has increased the intensity of crankshaft front end, while making its output high pulling torque, still guarantee that reliable in structure is stable, avoided the engine crankshaft front end impacted and fault or the stressed fault of crossing major rupture of clamping bolt of fracture by high pulling torque.
Timing gear 22 are set in engine crankshaft front end 21 inner terminals, will be connected with its key and change the interference connection into, and interference connects uses bent axle stressed evenly, avoids occurring that key is hit excessive and fault that damage.The effect of timing gear 22 is: during engine piston motion, the action of valve must obtain controlled.The moment of also just saying the action of valve must be to be consistent with the state of piston movement with the moment with state, and bent axle and camshaft are not on an axis, must must there is transmission system to connect between them, (certainly, some is lower arranging cam axle, the motor of this form is fewer at present, but equally also wants timing gear.) this transmission system completed by two gears and chain or belt, these two gears just are called timing gear so, these two have mark above gear, by mark, just can guarantee that the moment of valve event and action are accurately after loading onto chain or belt after good.
Oil pump gear 23 next-door neighbour's timing gear 22 are set on engine crankshaft front end 21, its inner (right-hand member in figure) and timing gear 22 butts.Oil pump gear 23 middle parts are the oil pump gear body, inner (right-hand member in figure) integrated former timing gear spacer, outer end (left end in figure) is integrated former belt pulley spacer, with engine crankshaft front end 21 interference fit, the oil pump gear 23 of integrated former timing gear spacer, former belt pulley spacer has increased oil pump gear and engine crankshaft front end 21 interference fit length, can meet the more powerful demand of vibration damper pulley groove transmission.
the outer end of oil pump gear 23 (left end in figure) end face circumferentially offers positioning pin hole and a plurality of installation screw, vibration damper 24 is installed seam by its right-hand member and is set in the outer end of oil pump gear 23, after outer end positioning pin hole by locating stud 25 axial insertion machine oil pump gears 23 positions, axially be screwed in a plurality of installation screws of oil pump gear 23 outer ends by a plurality of bolts 26 again, making former single lock bolt fixedly add flat key fixedly changes to by the common fixed buffer of a plurality of bolts, make vibration damper fastening firmly, stressed even, the impact force of minimizing to the bent axle microcephaly, simultaneously, increase locating stud, use the belt pulley installation precision more secure.
to sum up, this engine crankshaft front-end architecture is cancelled processing keyway and vibration damper installation tapped hole is installed, timing gear are installed by former keyway arrangements and are improved to the interference fit connection, oil pump gear and belt pulley spacer are integrated, and with vibration damper, be connected, use vibration damper needn't be installed on the little head end of bent axle, vibration damper flat key and clamping bolt mounting structure have been changed, under the prerequisite that does not change the crankshaft front end external diameter, make motor head can pass out more high pulling torque, and guaranteed the engine crankshaft end functional reliability, avoided the engine crankshaft front end impacted and fault or the stressed fault of crossing major rupture of clamping bolt of fracture by high pulling torque.In addition, the engine crankshaft front-end architecture is more compact, and part is simplified integration, thereby has reduced manufacturing and maintenance cost.
Above disclosed be only several specific embodiment of the present invention, still, the present invention is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.
Claims (6)
1. an engine crankshaft front-end architecture, is characterized in that, comprising:
The engine crankshaft front end;
Timing gear, interference are set in engine crankshaft front end inner terminal;
Oil pump gear, next-door neighbour's timing gear, interference are set in the engine crankshaft front end, and it comprises integrated middle part oil pump gear body, inner timing gear spacer and outer end belt pulley spacer;
Vibration damper, be set in the belt pulley spacer outer end of oil pump gear, and pass through the bolt axial restraint.
2. engine crankshaft front-end architecture according to claim 1, it is characterized in that: described engine crankshaft front end relies on described timing gear and oil pump gear transmitting torque, and described vibration damper is for reducing engine luggine or by the external outputting power of race on vibration damper.
3. engine crankshaft front-end architecture according to claim 1, it is characterized in that: the outer end end face of described oil pump gear circumferentially offers a plurality of installation screws, and described vibration damper axially is connected to respectively in described a plurality of installation screw and is fixed by a plurality of bolts.
4. engine crankshaft front-end architecture according to claim 3, it is characterized in that: described bolt is the outer-hexagonal hook bolt.
5. the described engine crankshaft front-end architecture of any one according to claim 1 to 4, it is characterized in that: the outer end end face of described oil pump gear also offers positioning pin hole, after described vibration damper positions to the described positioning pin hole of insertion by alignment pin, then by bolt, be fixed.
6. engine crankshaft front-end architecture according to claim 5, it is characterized in that: described locating stud is pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310271715.6A CN103398086B (en) | 2013-07-01 | 2013-07-01 | Front structure of engine crankshaft |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310271715.6A CN103398086B (en) | 2013-07-01 | 2013-07-01 | Front structure of engine crankshaft |
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| CN103398086A true CN103398086A (en) | 2013-11-20 |
| CN103398086B CN103398086B (en) | 2015-12-30 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832277A (en) * | 2015-05-12 | 2015-08-12 | 广西玉柴机器股份有限公司 | Power output structure of front end of crankshaft |
| CN106337734A (en) * | 2016-11-08 | 2017-01-18 | 广西玉柴机器股份有限公司 | The diesel engine front end multifunctional power output structure |
| CN106640366A (en) * | 2016-12-08 | 2017-05-10 | 广西玉柴机器股份有限公司 | Power output structure of engine crankshaft front end |
| CN112727937A (en) * | 2020-12-30 | 2021-04-30 | 中国石油天然气集团有限公司 | Free end expansion joint structure of engine crankshaft, mounting method and engine |
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| CN2866942Y (en) * | 2005-11-28 | 2007-02-07 | 潍柴动力股份有限公司 | Axle end structure of diesel engine crank axle |
| CN201377355Y (en) * | 2009-04-07 | 2010-01-06 | 广西玉柴机器股份有限公司 | Front end power output structure of crankshaft |
| CN201627874U (en) * | 2010-03-04 | 2010-11-10 | 潍柴动力股份有限公司 | Vibration damper of belt pulley |
| CN102734339A (en) * | 2012-06-27 | 2012-10-17 | 无锡开普动力有限公司 | Crankshaft output mechanism |
| CN203500265U (en) * | 2013-07-01 | 2014-03-26 | 广西玉柴机器股份有限公司 | Engine crankshaft front end structure |
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2013
- 2013-07-01 CN CN201310271715.6A patent/CN103398086B/en active Active
Patent Citations (5)
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| CN2866942Y (en) * | 2005-11-28 | 2007-02-07 | 潍柴动力股份有限公司 | Axle end structure of diesel engine crank axle |
| CN201377355Y (en) * | 2009-04-07 | 2010-01-06 | 广西玉柴机器股份有限公司 | Front end power output structure of crankshaft |
| CN201627874U (en) * | 2010-03-04 | 2010-11-10 | 潍柴动力股份有限公司 | Vibration damper of belt pulley |
| CN102734339A (en) * | 2012-06-27 | 2012-10-17 | 无锡开普动力有限公司 | Crankshaft output mechanism |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832277A (en) * | 2015-05-12 | 2015-08-12 | 广西玉柴机器股份有限公司 | Power output structure of front end of crankshaft |
| CN106337734A (en) * | 2016-11-08 | 2017-01-18 | 广西玉柴机器股份有限公司 | The diesel engine front end multifunctional power output structure |
| CN106640366A (en) * | 2016-12-08 | 2017-05-10 | 广西玉柴机器股份有限公司 | Power output structure of engine crankshaft front end |
| CN112727937A (en) * | 2020-12-30 | 2021-04-30 | 中国石油天然气集团有限公司 | Free end expansion joint structure of engine crankshaft, mounting method and engine |
| CN112727937B (en) * | 2020-12-30 | 2022-06-21 | 中国石油天然气集团有限公司 | Free end expansion joint structure of engine crankshaft, mounting method and engine |
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| Publication number | Publication date |
|---|---|
| CN103398086B (en) | 2015-12-30 |
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