CN102606687A - Transmission device for improving transmission efficiency of two-shaft type gearbox - Google Patents
Transmission device for improving transmission efficiency of two-shaft type gearbox Download PDFInfo
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- CN102606687A CN102606687A CN2012100774130A CN201210077413A CN102606687A CN 102606687 A CN102606687 A CN 102606687A CN 2012100774130 A CN2012100774130 A CN 2012100774130A CN 201210077413 A CN201210077413 A CN 201210077413A CN 102606687 A CN102606687 A CN 102606687A
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- gear
- gearbox
- gears
- retaining
- gearshift
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Abstract
The invention discloses a transmission device for improving the transmission efficiency of a two-shaft type gearbox. The two-shaft type gearbox comprises a gearbox body, an input shaft, an output shaft, transmission gears corresponding to all gears, a reverse gear, shifting synchronizers and a bearing; both ends of one of the input shaft and the output shaft are supported on the gearbox body through the bearing; a driving gear corresponding to the first gear and the reverse gear is fixedly connected with the input shaft, the driving gear and a driven gear corresponding to the rest gears are idly sleeved on the input shaft or the output shaft, every gear except for the first gear and the reverse gear is shifted by two synchronizers; when any gear is in work, except the gear, the first gear and the reverse gear, which rotate corresponding to the transmission gears, the transmission gears corresponding to the other gears are in a static state, thereby reducing the oil stirring loss and the windage loss. The transmission device has the following advantages of reducing the number of oil stirring gears out of the substantial work when a target gear works and making the total number of the gears in a running state and out of the substantial work be reduced, thereby reducing the oil stirring loss and the windage loss in the gearbox work, effectively improving the whole transmission efficiency of the gearbox, improving the temperature rising of the gearbox and prolonging the service life of the gearbox.
Description
Technical field
The present invention relates to a kind of automobile chassis and transmission field, particularly a kind of transmission device that improves two-axis gearbox transmission efficiency.
Background technique
Because energy crisis and environmental pollution problem are on the rise, energy utilization rate becomes the focus that people pay close attention to.In automobile industry, vehicle transmission efficient directly influences automobile fuel ecomomy and discharging thereof, and the gearbox transmission efficiency is the key factor that constitutes the car load transmission efficiency.
Just the research document shows both at home and abroad; The gearbox power consumption can be divided into has load power consumption and no-load power consumption; Wherein, Have the load power consumption to mainly include gear engagement power consumption and bearing power consumption under the load-up condition, the no-load power consumption mainly comprises churning loss, windage loss (power consumption that gear causes owing to fluid resistance) and the bearing power consumption of gear in the environment of air or air and mist of oil.With regard to laboratory data both domestic and external, the no-load power consumption is to form the major component of gearbox power consumption by the load power consumption relatively, and during middle low speed, the gearbox power consumption mainly shows as gear engagement power consumption and churning loss, and during high speed, windage loss is particularly evident.
In the tradition speed changer; Gear is in normal engagement rotary state mostly; Usually when a certain gear was worked, the corresponding driving gear pair of this gear carried and rotates, and the corresponding driving gear pairs of other gears then zero load rotate; Though other gear driving gear pairs do not carry, churning loss and windage loss that gear idle running brings are inevitable.This mainly is because generally all be the empty cover of a gear in the corresponding driving gear pair of the gear of traditional gearbox; Another gear is affixed with axle; Utilize switchover apparatus that free gear is connected with axle power, accomplish gearshift, so as long as axle is rotating; Other gear pairs of not participating in gear work will unloadedly rotate, and have the nature of rotation will bring certain churning loss and windage loss.
Summary of the invention
Technical problem to be solved by this invention is that a kind of transmission device that reduces the two-axis gearbox transmission efficiency of raising of churning loss that unloaded transmitting gear brings and windage loss will be provided.
In order to solve above technical problem; The invention provides a kind of transmission device that improves two-axis gearbox transmission efficiency; Two-axis gearbox comprises driving gear, reverse gear, gearshift synchronizer and the bearing of gear box, input shaft, output shaft, each gear correspondence, and said input shaft and output shaft two ends are supported on gear box through bearing, and a retaining and reverse gear corresponding driving gear and input shaft are affixed; The driving and driven gear that all the other gears are corresponding all is placed on input shaft or the output shaft; And each gear except that keeps off, reverses gear need be realized gearshift by two synchronizers, when gear is worked arbitrarily, except that this gear and a retaining, the corresponding driving gear rotation of reversing gear; The driving gear that other gears are corresponding remains static, and has reduced churning loss and windage loss.
The driving gear and the input shaft of a said retaining are affixed, and the main driven gear of a retaining is in the state of rotation all the time, and the oil that stirs of the driven gear of a retaining is realized lubricated.
Said gearbox adopts flooding system lubrication, on the gear box inwall, offers oil collection grooves, and the oil that is splashed to cabinet wall is compiled the position that drains into setting, lubricate.
Said each gear except that keeps off, reverses gear need be realized gearshift by two synchronizers, is meant that two synchronizers are worked simultaneously, are equivalent to a how synchronous gear in synchronous engaging process, and the gearshift time does not increase; Perhaps adopt gearbox control to select gearshift; Set and to engage threshold value in advance, when rotating speed reaches the task of joint in advance of accomplishing one of them synchronizer when engaging threshold value in advance, when rotating speed gets into the gearshift rotating speed; When shifting gears; Again remaining synchronizer is engaged, and accomplish the gear of gearshift, the process that does not then combine in advance by a synchronizer.Gearbox control is judged the liter retaining or is fallen retaining according to gas pedal; During accelerator pedal; Gearbox control is judged to be the retaining process that rises; Carrying out a liter retaining prepares; Rotating speed reaches when engaging threshold value in advance, and one of them in advance that target gear on power shaft or the output shaft is corresponding synchronized engages, when rotating speed gets into the gearshift rotating speed; When shifting gears, another again that the target gear is corresponding synchronized engages; When stepping on brake pedal; Can be divided into common braking and brake hard; During common braking, gearbox control is judged to be and falls the retaining process, carries out to fall retaining and prepare; Rotating speed reaches when engaging threshold value in advance; One of them in advance that target gear on power shaft or the output shaft is corresponding synchronized engages, when rotating speed entering gearshift rotating speed, when shifting gears; Another again that the target gear is corresponding synchronized engages, and then need not to consider the switching of synchronized during brake hard.And accomplish the gear of gearshift by a synchronizer, the process that does not then combine in advance.
Said gearbox reverses gear and can select synchronizer or straight-tooth sliding gear gearshift mode for use, during reversing, only needs under vehicle stop state, and will reverse gear synchronizer or straight-tooth sliding gear are pushed into engagement and get final product.
Superior effect of the present invention is:
During the work of target gear; Reduced do not participate in essence work stir oilgear quantity; Make the gear sum minimizing that is in operating condition but does not participate in essence work simultaneously, thereby reduced churning loss and the windage loss in the gearbox work, effectively improve the whole transmission efficiency of gearbox; Improve the gearbox temperature rise, improve the gearbox life-span.
Description of drawings
Fig. 1 is the structural representation of the two-axis five retaining gearbox transmission devices of the present invention.
Label declaration among the figure
1-gear box; 2-input shaft;
3-output shaft;
ABCDE is the gearshift synchronizer;
I-one retaining main driven gear; II-two retaining main driven gear;
III-three retaining main driven gear; IV-four retaining main driven gear;
V-five retaining main driven gear; R-driving gear reverses gear.
Embodiment
Seeing also shown in the accompanying drawing, is that example is further described the present invention with two-axis five retaining gearboxes.
As shown in Figure 1, the invention provides a kind of transmission device that improves two-axis gearbox transmission efficiency, two-axis gearbox comprises driving gear, reverse gear, gearshift synchronizer and the bearing of gear box 1, input shaft 2, output shaft 3, each gear correspondence; Said input shaft 2 is supported on the equal sky of gear box 1, two to five retaining main driven gear with output shaft 3 two ends through bearing and is enclosed within on input shaft 2 or the output shaft 3, and a retaining driving gear and input shaft 2 are affixed; One retaining driven tooth bye is enclosed within on the output shaft 3; Reverse gear driving gear and input shaft 2 is affixed, and middle idle pulley sky is enclosed within on the gearbox casing 1, and driven gear then sky is enclosed within on the output shaft 3; Except that one the retaining and reverse gear be realize by a synchronizer E; All the other gears all need two synchronizers to realize, when so any gear is worked, and traditional relatively gearbox; The quantity that the corresponding driving gear of other gears is in rotary state is all greatly reduced, and has reduced churning loss and windage loss.During gearbox one retaining work, other gear driving gears do not rotate, during two to five retaining work; Except that this retaining driving gear and first gear rotation, other shift gears do not rotate, when reversing gear work; Be that reverse gear and first gear rotate, other shift gears do not rotate, traditional relatively gearbox yet; When gear was worked arbitrarily, transmitting gear was all few relatively, has reduced churning loss and windage loss in the gearbox working procedure.
Said gearbox adopts flooding system lubrication, considers that a retaining driving gear size is little, in the not direct generally speaking floodlubrication oil; Be lubricated so utilize a retaining driven gear to stir oil, a retaining driving gear and input shaft 2 is affixed, make a retaining main driven gear I be in rotary state all the time; Because a retaining driven gear size is big; All the time be in the lubricant oil, thereby the oil that stirs of a retaining driven gear capable of using is realized lubricatedly, can on the gearbox inwall, offer oil collection grooves simultaneously; The oil that is splashed to casing 1 inwall compiled guide to the relevant position, bear the lubricated work of part.
The present invention need be accomplished the gear of gearshift by two synchronizers, and its gearshift is similar with the situation of a synchronizer of traditional gearbox, just in synchronous engaging process; Need two synchronizers to work simultaneously; Be equivalent to a how synchronous gear, the gearshift time does not increase, such as changing to four retainings from three retainings; As long as synchronizer C, D are withdrawed from joint, synchronizer A, B left side joint simultaneously get final product.Perhaps adopt gearbox control (TCU) to select gearshift, need be accomplished the gear of gearshift by two synchronizers, set and to engage threshold value in advance, promptly rotating speed reaches and engages threshold value in advance and then accomplish synchronizer and engage task in advance.Gearbox control is judged the liter retaining or falls retaining that during accelerator pedal, gearbox control is judged to be the retaining process that rises according to gas pedal; Carry out a liter retaining and prepare, rotating speed reaches when engaging threshold value in advance, and one of them in advance that target gear on input shaft or the output shaft is corresponding synchronizer engages; When rotating speed entering gearshift rotating speed, when shifting gears, another again that the target gear is corresponding synchronizer engages; Rise to five retainings such as gearbox from four retainings, be judged to be before the gearshift and rise retaining, when rotating speed reaches the threshold value of joint in advance of five retaining correspondences; Gearbox control makes the right in advance joint of synchronizer C (or synchronizer D), when rotating speed entering gearshift rotating speed, when shifting gears; Synchronizer A, B withdraw from joint, and synchronizer D (or synchronizer C) is right simultaneously engages; When stepping on brake petal, can be divided into common braking and emergency braking, during common braking, gearbox control is judged to be the retaining process of falling; Carry out and fall the retaining preparation, rotating speed reaches when engaging threshold value in advance, and one of them in advance that target gear on input shaft or the output shaft is corresponding synchronizer engages; When rotating speed entering gearshift rotating speed, when shifting gears, another again that the target gear is corresponding synchronizer engages; Then need not to consider the switching of synchronizer during emergency braking,, be judged to be before the gearshift and fall retaining such as reducing to two retainings from three retainings; When rotating speed reached the threshold value of joint in advance of two retaining correspondences, gearbox control made the right in advance joint of synchronizer A (or synchronizer B), when rotating speed gets into the gearshift rotating speed; When shifting gears, synchronizer C, D withdraw from joint, and synchronizer B (or synchronizer A) is right simultaneously engages.And accomplish the gear of gearshift by a synchronizer, the process that does not then combine in advance.
Gearbox reverses gear and adopts the synchronizer gearshift, during reversing, as long as under vehicle stop state, the right joint of synchronizer E is got final product.Adopt the above-mentioned shift control method that selects, can under the prerequisite that does not increase the gearshift time, effectively reduce gear churning loss and windage loss in the gearbox.
Said two-axis five retaining gearbox transmission schemes and method can be used for engine behind front wheel forerunner passenger car, and output shaft of gear-box can be made of one with the main reducing gear driving gear, can become one with differential mechanism simultaneously.
Said two-axis five retaining gearbox transmission schemes and method are applicable to manual transmission and automatic transmission case.
Claims (4)
1. transmission device that improves two-axis gearbox transmission efficiency; Two-axis gearbox comprises driving gear, reverse gear, gearshift synchronizer and the bearing of gear box, input shaft, output shaft, each gear correspondence; It is characterized in that: said input shaft and output shaft two ends are supported on gear box through bearing; One retaining and reverse gear corresponding driving gear and input shaft are affixed, and the driving and driven gear that all the other gears are corresponding all is placed in and inputs or outputs on the axle, and each gear except that keeps off, reverses gear need be realized gearshift by two synchronizers; When gear is worked arbitrarily; Except that this gear and a retaining, the corresponding driving gear rotation of reversing gear, the driving gear that other gears are corresponding remains static, and has reduced churning loss and windage loss.
2. the transmission device of the two-axis gearbox transmission efficiency of raising according to claim 1; It is characterized in that: the driving gear and the input shaft of a said retaining are affixed; The main driven gear of one retaining is in the state of rotation all the time, and the oil that stirs of the driven gear of a retaining is realized lubricated.
3. the transmission device of the two-axis gearbox transmission efficiency of raising according to claim 1; It is characterized in that: said gearbox adopts flooding system lubrication; On the gear box inwall, offer oil collection grooves, the oil that is splashed to cabinet wall is compiled the position that drains into setting.
4. the transmission device of the two-axis gearbox transmission efficiency of raising according to claim 1; It is characterized in that: said each gear except that keeps off, reverses gear need be realized gearshift by two synchronizers; Be meant in synchronous engaging process; Two synchronizers are worked simultaneously, are equivalent to a how synchronous gear, and the gearshift time does not increase; Perhaps adopt gearbox control to select gearshift; Set and to engage threshold value in advance, when rotating speed reaches the task of joint in advance of accomplishing one of them synchronizer when engaging threshold value in advance, when rotating speed gets into the gearshift rotating speed; When shifting gears; Again remaining synchronizer is engaged, and accomplish the gear of gearshift, the process that does not then combine in advance by a synchronizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100774130A CN102606687A (en) | 2012-03-22 | 2012-03-22 | Transmission device for improving transmission efficiency of two-shaft type gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100774130A CN102606687A (en) | 2012-03-22 | 2012-03-22 | Transmission device for improving transmission efficiency of two-shaft type gearbox |
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| Publication Number | Publication Date |
|---|---|
| CN102606687A true CN102606687A (en) | 2012-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100774130A Pending CN102606687A (en) | 2012-03-22 | 2012-03-22 | Transmission device for improving transmission efficiency of two-shaft type gearbox |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671756A (en) * | 2012-09-12 | 2014-03-26 | 通用汽车环球科技运作有限责任公司 | Multi-speed transmission |
| CN108351005A (en) * | 2015-10-08 | 2018-07-31 | 国际农业机械集团 | Gearbox unit for the agri-vehicle with wide velocity interval |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2729431Y (en) * | 2004-09-30 | 2005-09-28 | 湖南益阳齿轮股份有限公司 | Light vehicle speed variator |
| CN2833258Y (en) * | 2005-03-31 | 2006-11-01 | 中国农业大学 | Automobile transmission gear shift mechanism |
| JP2008014349A (en) * | 2006-07-03 | 2008-01-24 | Aichi Mach Ind Co Ltd | Synchro mechanism and transmission equipped with the same |
-
2012
- 2012-03-22 CN CN2012100774130A patent/CN102606687A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2729431Y (en) * | 2004-09-30 | 2005-09-28 | 湖南益阳齿轮股份有限公司 | Light vehicle speed variator |
| CN2833258Y (en) * | 2005-03-31 | 2006-11-01 | 中国农业大学 | Automobile transmission gear shift mechanism |
| JP2008014349A (en) * | 2006-07-03 | 2008-01-24 | Aichi Mach Ind Co Ltd | Synchro mechanism and transmission equipped with the same |
Non-Patent Citations (1)
| Title |
|---|
| 陈家瑞: "《汽车构造（下册）第3版》", 31 January 2010 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671756A (en) * | 2012-09-12 | 2014-03-26 | 通用汽车环球科技运作有限责任公司 | Multi-speed transmission |
| CN103671756B (en) * | 2012-09-12 | 2016-08-17 | 通用汽车环球科技运作有限责任公司 | Multiple-speed gear-box |
| CN108351005A (en) * | 2015-10-08 | 2018-07-31 | 国际农业机械集团 | Gearbox unit for the agri-vehicle with wide velocity interval |
| CN108351005B (en) * | 2015-10-08 | 2021-09-21 | 国际农业机械集团 | Gearbox unit for agricultural vehicles with a wide speed range |
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Application publication date: 20120725 |