CN201682759U - Front-deep extensive-cultivation and back-shallow fine-crushing rotary cultivator - Google Patents
Front-deep extensive-cultivation and back-shallow fine-crushing rotary cultivator Download PDFInfo
- Publication number
- CN201682759U CN201682759U CN2010202208514U CN201020220851U CN201682759U CN 201682759 U CN201682759 U CN 201682759U CN 2010202208514 U CN2010202208514 U CN 2010202208514U CN 201020220851 U CN201020220851 U CN 201020220851U CN 201682759 U CN201682759 U CN 201682759U
- Authority
- CN
- China
- Prior art keywords
- transmission shaft
- power transmission
- hack
- clutch end
- rotary cultivator
- 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
Images
Abstract
The utility model discloses a front-deep extensive-cultivation and back-shallow fine-crushing rotary cultivator; a speed changing box is fixed on a chassis frame; the front part of the chassis frame is provided with a resistance guide wheel shaft which is sheathed with a resistance guide walking wheel, the middle part thereof is provided with a deep plough blade transmission shaft which is sheathed with a deep plough blade set, and the rear part thereof is provided with a soil-crushing blade transmission shaft which is sheathed with a soil-crushing blade set; the speed changing box is provided with a first power output end and a second power output end, wherein the first power output end drives the resistance guide wheel shaft and the deep plough blade transmission shaft to rotate; and the second power output end drives the soil-crushing blade transmission shaft to rotate. The front-deep extensive-cultivation and back-shallow fine-crushing rotary cultivator can realize the deep cultivation of soil under the function of the deep plough blade set, and realize the shallow crushing of the soil under the function of the soil-crushing blade set. The front-deep extensive-cultivation and back-shallow fine-crushing rotary cultivator can realize reliable, smooth and uniform walking, and improve the quality and efficiency of cultivation.
Description
Technical field:
The utility model relates to a kind of agricultural machinery, particularly relates to a kind of rotary cultivator realizing front deep and extensive cultivation and rear shallow and fine crushing.
Technical background:
Rotovator is to finish cultivation machinery cultivated, the rake operation with tractor.Because of its have the hack ability strong, plough characteristics such as the face of land, back is smooth, and obtained using widely.Present rotovator is divided into horizontal shaft type and rotovator vertical shaft type two classes by the configuration mode of its rotary ploughing cutter shaft.The horizontal shaft type rotovator has stronger hack ability, and one-stop operation can make soil in small, broken bits, and the clay fertilizer blending is even, and ground is smooth, reaches the rotovator requirement that plant in nonirrigated farmland sowing or paddy field, helps striving for farming season, improves work efficiency, and can make full use of the power of tractor.But the covering power to stubble, weeds is relatively poor, more shallow (12～16 centimetres of the dry farmings of tilling depth; Water is ploughed 14～18 centimetres), energy consumption is bigger.Be mainly used in paddy field and vegetable field, also be used for the orchard intertillage.The tilling depth of heavy horizontal shaft type rotovator can reach 20～25 centimetres, is used for opening up wasteland the farming on shrub ground, marshland and ground, farmland running to weeds more.Workpiece comprises the rotary tillage rotor and cuts native blade by some handles that the bull helical evenly disposes that by actuator drives, normal revolution is 190～280 rev/mins by tractor motive power output shaft.The direction of rotation of rotor is consistent with the direction that tractor wheels is rotated usually.Cut native blade and cut soil layer after by forward direction, and soil block is thrown on case and the planker to the back upper place, make it further fragmentation.When rotor was cut soil and thrown soil, soil helped to promote unit to the reaction force of rotor and advances, thereby required tractive force is very little during the horizontal rotary tiller operation, sometimes even can promote unit by rotor and advance.Cut native blade and can be divided into scalpriform cutter, tulwar, right angle cutter and curved knife.Scalpriform cutter front end is narrower, and the ability of burying is preferably arranged, and energy consumption is little, but easily twines grass, is used for few vegetable garden of weeds and garden more.The curved cutting edge of tulwar has the sliding cutting effect, easily cuts off grass roots and straw winding is suitable for the paddy field farming.The right angle cutter has vertical and horizontal cutting blade, the blade broad, and good rigidly make easily, but penetration performance is relatively poor.The intensity of curved knife is big, good rigidly, and sliding cutting is made good use of, and is generally used on the heavy rotovator.With tractor below 15 kilowatts the time, the general employing directly connects, without the universal joint transmission; With more than 15 kilowatts during tractor, then adopt trifilar suspension formula, universal joint transmission; The general employing of heavy rotovator is towed.Tilling depth is by planker or gauge wheel control and adjusting.Planker is located at the back of rotor, held concurrently hack and smooth effect; Gauge wheel then is located at the place ahead of rotor.The configuration mode of rotor afterbody transmission device has two kinds of side transmission and central transmissions.The side transmission is used for the less offset ratory cultivator of working width more.Central authorities' transmission is used for the bigger rotovator of working width, and the symmetry of machine is good, and machine stress is even; But an area below the transmission case rotovator does not reach to form and balks owing to cutting native blade, need establish in addition and eliminate the device of balking.Vertical shaft type rotovator workpiece is the rotary cultivator attachment that 2～3 scroll cutting knifes are housed.Rotary cultivator attachment rotates around vertical shaft during operation, and cutting knife shreds soil.Be applicable to that paddy field water either is cultivated, stronger hack is arranged, play the slurry effect, but covering performance be poor.Use more in Japan.For strengthening the farming effect of rotovator, on some national rotovator, install various attachment devices additional.As articulating spike-tooth harrow in the rotovator back, install break shovel additional to add deep plough level etc. to strengthen the hack effect.
And at present, the rotary tillage mode of rotovator has three kinds:
First kind is by host header (tractor), driving back rotary tillage break bar as preceding power ploughs, the advantage of this arable land mode is that the front has running gear, can control the speed of travel, prevent that break bar from becoming road wheel, make break bar effectively drive colter and be rotated, soil is dug to greatest extent.Its shortcoming is: the earth of being digged becomes bulk not of uniform size, and this big block soil just can carry out proportion of crop planting after also needing manually once more the top layer large clod to be broken into uniform fritter shape when plantation.
Second kind is on first kind basis, on the deep ploughing blade shaft, dark blade and shallow blade are installed simultaneously, this break bar shortened cutting blade in the hack process has certain hack effect, but because long and short blade is all done synchronous rotation on same axle, the linear speed difference of its long and short blade is bigger, and the top layer soil block still can not effectively become clods breaking the required soil fineness of different plants.More than two kinds of arable land modes all need big power to control, also be not suitable in the paddy field, patch and hillside fields farming.
The third is small-sized rotovator, and the advantage of this rotovator is can be in patch and hillside fields farming.Its shortcoming is that the break bar of this machine is that to plough cutter be again road wheel simultaneously when ploughing, this structure when soil softer, particularly when underwater cultivation break bar will the original place rotation and can not walking, when face of land soil is hard, Rotary tillage blade can not effectively screw in the soil and form walking fast, thereby soil can not effectively be stirred, make entire machine beat significantly occur, the people is difficult to control, the soil of being up to not only is uneven, and become big block, and it is poor to plough dark uniformity, and such soil needs can plant after the secondary hack is smooth.In left and right sides soil soft or hard not for the moment, span diverse before and after left side break bar and the right break bar will occur is difficult to control.
The utility model content:
The purpose of this utility model provides and a kind ofly can realize realizing front deep and extensive cultivation, rear shallow and fine crushing, and the rotary cultivator realizing front deep and extensive cultivation and rear shallow and fine crushing that can steadily at the uniform velocity walk.
For achieving the above object, the technical solution of the utility model is: the rotary cultivator realizing front deep and extensive cultivation and rear shallow and fine crushing of design, comprise sole, on this sole, be fixed with gearbox, its main points are: be provided with the resistance guide wheel shaft in described sole front portion, on this resistance guide wheel shaft, be set with resistance guiding road wheel, the sole middle part is provided with trench plow blade power transmission shaft, on this trench plow blade power transmission shaft, be set with the trench plow set of blades, the sole rear portion is provided with hack blade power transmission shaft, is set with the hack set of blades on this hack blade power transmission shaft; Described gearbox is provided with first clutch end and second clutch end, and described first clutch end drives described resistance guide wheel shaft and trench plow blade power transmission shaft rotates, and described second clutch end drives described hack blade power transmission shaft and rotates.
The utility model is by after the gearbox speed change with the power of engine, respectively different rotating speeds is sent to simultaneously resistance guiding road wheel, trench plow blade power transmission shaft and hack blade power transmission shaft, because resistance guiding road wheel is subjected to the control of gearbox internal speed-changing mechanism, this resistance guiding road wheel remains a walking states that is lower than trench plow set of blades rotary speed, the trench plow set of blades is when digging like this, because of there is resistance guiding road wheel the front, the trench plow set of blades can only rotate and can not promote the walking of resistance guiding road wheel forward, dark set of blades will effectively be rotated soil was overturn this moment, the hack set of blades high speed rotating that puts at the hack blade, the bulk soil that the trench plow set of blades is ploughed deeply carries out the refinement break process, principle is that trench plow set of blades rotating speed is lower than hack set of blades rotating speed, will obtain the rotate effect of a trench plow set of blades linear velocity less than hack set of blades linear velocity like this.Because the speed of hack set of blades can need to regulate gearbox more, so it can use different rotating speeds obtain the plantation that different graininess is fit to different plants according to different soil structures, thereby more helps the plantation of plant.Particularly in underwater cultivation, the utility model is because of there being resistance guiding road wheel, it has in the back can stop under the thrust of trench plow set of blades and hack set of blades that the utility model is too fast to advance, when trench plow set of blades and hack blade in soft earth during the rotation of original place, trench plow set of blades and hack blade that resistance guiding road wheel can drive the back forward at the uniform velocity travel forward, and can not sunk in the mire as traditional rotovator.
Deep ploughing is in small, broken bits in the above structure also has such effect, and the tillage pan that long-term shallow plowing causes reduces the bulk density of soil, be unfavorable for crop root in soil to the deep layer expansion, also be unfavorable for absorbing moisture and nutrient.Deep ploughing strengthens the water penetration of soil, and deep ploughing can improve soil physical property, can improve guarantor's retaining to a certain extent, hold the gas ability.Because the generation in the whole world " greenhouse effect " in recent years, the appearance of warm winter phenomenon, winter, snowfall fell sharply, ground vegetation reduces, spring breeze is big, the ground arid, and deep ploughing has certain admittance sleet, alleviate the effect of rainwash, and play water conservation to a certain extent, protect ground, protect " three protect " effect of soil; And shallow and fine crushing more can prevent the evaporation of moisture in the permeability that increases soil, thereby well keeps the fertile matter of soil, for crop production provides a good soil environment.
Equal one is provided with sprocket wheel on described first clutch end, resistance guide wheel shaft and the trench plow blade power transmission shaft, described first clutch end links to each other through same first chain with the resistance guide wheel shaft, and described first clutch end links to each other through same second chain with trench plow blade power transmission shaft.Above structure adopts chain gear transmission, good reliability, and when the utility model was in running order, the transmission strength of first clutch end, resistance guide wheel shaft and trench plow blade power transmission shaft etc. was bigger, adopted sprocket wheel and chain to carry out the transmission of power, can not skid.
For the transmission of power that makes second clutch end and hack blade power transmission shaft more reliable, described second clutch end and the equal one of hack blade power transmission shaft are provided with sprocket wheel, and described second clutch end links to each other through same the 3rd chain with hack blade power transmission shaft.
For the utility model can be walked more freely in soft soil property, upwards evenly be provided with resistance guide vane group in the wheel rim week of described resistance guiding road wheel, design resistance guide vane group can be good at desliming.
The injury operator is fixed with safety guard during for fear of trench plow set of blades and the work of hack set of blades on described sole, and this safety guard covers on outside described trench plow set of blades and the hack set of blades.
Be provided with elasticity soil screed in described safety guard rear end, flat board is set can be flattened farmed ground, thereby realizes cultivating of crops better.
Be provided with the adjusting support bar at described sole rear portion, below this adjusting support bar, road wheel be installed through support bar.It is when not working for the utility model that above structure is provided with road wheel, it is convenient on the way to walk, avoid hard bottom surfaces such as trench plow set of blades and hack blade and concrete floor to contact the damage that causes, the operator only need buttress and can walk in the time of also can avoiding on the road walking simultaneously.
Effect of the present utility model: the utility model can be realized the deep ploughing of soil under the effect of trench plow set of blades, realizes the light broken of soil under the effect of hack set of blades.The utility model novelty simple in structure can realize reliably, at the uniform velocity walk stably, has improved the quality and the efficient of ploughing, and use of the present utility model can reduce operator's labour intensity simultaneously, because simple in structure, therefore with low cost.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the vertical view of Fig. 1.
Embodiment:
Below in conjunction with accompanying drawing the utility model is further described.
See also Fig. 1 and Fig. 2: shown in rotary cultivator realizing front deep and extensive cultivation and rear shallow and fine crushing, comprise sole 1, on this sole 1, be fixed with gearbox 2, described gearbox 2 links to each other with engine, be provided with resistance guide wheel shaft 3 in described sole 1 front portion, on this resistance guide wheel shaft 3, be set with resistance guiding road wheel 4, wheel rim week at described resistance guiding road wheel 4 upwards evenly is provided with resistance guide vane group 14, sole 1 middle part is provided with trench plow blade power transmission shaft 5, on this trench plow blade power transmission shaft 5, be set with trench plow set of blades 6, sole 1 rear portion is provided with hack blade power transmission shaft 7, is set with hack set of blades 8 on this hack blade power transmission shaft 7; Described gearbox 2 is provided with first clutch end 9 and second clutch end 10, described first clutch end 9 drives described resistance guide wheel shaft 3 and trench plow blade power transmission shaft 5 rotates, and described second clutch end 10 drives described hack blade power transmission shaft 7 and rotates.The length of the blade of trench plow set of blades 6 is greater than the length of the blade of hack set of blades 8 in the above structure, and the blade of described hack set of blades 8 is formed by the solid mutually cover of two joint blades, therefore the length of the blade of this hack set of blades 8 is adjustable, and this mode can realize changing the length that hack set of blades 8 can require the blade of adjusting hack set of blades 8 according to the degree of depth of fine earth; Certainly, also can change the hack set of blades 8 that causes diversified in specifications as requested, thereby realize the demand of the hack degree of depth.
Preferred 1: as can be seen in conjunction with Fig. 1 and Fig. 2: on described first clutch end 9, resistance guide wheel shaft 3 and the trench plow blade power transmission shaft 5 all one be provided with sprocket wheel, described first clutch end 9 links to each other through same first chain 11 with resistance guide wheel shaft 3, and described first clutch end 9 links to each other through same second chain 12 with trench plow blade power transmission shaft 5; Described second clutch end 10 and hack blade power transmission shaft 7 equal one are provided with sprocket wheel, and described second clutch end 10 links to each other through same the 3rd chain 13 with hack blade power transmission shaft 7.
Preferred 2: the transmission of power in the utility model between first clutch end 9 and resistance guide wheel shaft 3, first clutch end 9 and trench plow blade power transmission shaft 5, second clutch end 10 and the hack blade power transmission shaft 7 is except realizing by the sprocket wheel chain structure, can also carry out the transmission of power by the turbine and worm structure, certainly can also join by several clutch ends of resistance guide wheel shaft 3, trench plow blade power transmission shaft 5, hack blade power transmission shaft 7 etc. are direct and gearbox 2, also can realize the transmission of power.
It can also be seen that in conjunction with Fig. 1 and Fig. 2: be fixed with safety guard 15 on described sole 1, this safety guard 15 covers on outside described trench plow set of blades 6 and the hack set of blades 8, is provided with elasticity soil screed 16 in described safety guard 15 rear ends.
In Fig. 1: be provided with adjusting support bar 17 at described sole 1 rear portion, below this adjusting support bar 17, road wheel 18 be installed through support bar 17.
The above only is preferred embodiment of the present utility model; it is not restriction with the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (7)
1. rotary cultivator realizing front deep and extensive cultivation and rear shallow and fine crushing, comprise sole (1), on this sole (1), be fixed with gearbox (2), it is characterized in that: be provided with resistance guide wheel shaft (3) in described sole (1) front portion, on this resistance guide wheel shaft (3), be set with resistance guiding road wheel (4), sole (1) middle part is provided with trench plow blade power transmission shaft (5), on this trench plow blade power transmission shaft (5), be set with trench plow set of blades (6), sole (1) rear portion is provided with hack blade power transmission shaft (7), is set with hack set of blades (8) on this hack blade power transmission shaft (7); Described gearbox (2) is provided with first clutch end (9) and second clutch end (10), described first clutch end (9) drives described resistance guide wheel shaft (3) and trench plow blade power transmission shaft (5) rotates, and described second clutch end (10) drives described hack blade power transmission shaft (7) and rotates.
2. rotary cultivator realizing front deep and extensive cultivation and rear shallow and fine crushing according to claim 1, it is characterized in that: described first clutch end (9), resistance guide wheel shaft (3) and trench plow blade power transmission shaft (5) are gone up equal one and are provided with sprocket wheel, described first clutch end (9) links to each other through same first chain (11) with resistance guide wheel shaft (3), and described first clutch end (9) links to each other through same second chain (12) with trench plow blade power transmission shaft (5).
3. rotary cultivator realizing front deep and extensive cultivation and rear shallow and fine crushing according to claim 1, it is characterized in that: described second clutch end (10) and hack blade power transmission shaft (7) all one are provided with sprocket wheel, and described second clutch end (10) links to each other through same the 3rd chain (13) with hack blade power transmission shaft (7).
4. rotary cultivator realizing front deep and extensive cultivation and rear shallow and fine crushing according to claim 1 is characterized in that: the wheel rim week at described resistance guiding road wheel (4) upwards evenly is provided with resistance guide vane group (14).
5. rotary cultivator realizing front deep and extensive cultivation and rear shallow and fine crushing according to claim 1 is characterized in that: be fixed with safety guard (15) on described sole (1), this safety guard (15) covers on outside described trench plow set of blades (6) and the hack set of blades (8).
6. rotary cultivator realizing front deep and extensive cultivation and rear shallow and fine crushing according to claim 5 is characterized in that: be provided with elasticity soil screed (16) in described safety guard (15) rear end.
7. rotary cultivator realizing front deep and extensive cultivation and rear shallow and fine crushing according to claim 1 is characterized in that: be provided with at described sole (1) rear portion and regulate support bar (17), through support bar (17) road wheel (18) is installed in this adjusting support bar (17) below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202208514U CN201682759U (en) | 2010-06-09 | 2010-06-09 | Front-deep extensive-cultivation and back-shallow fine-crushing rotary cultivator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202208514U CN201682759U (en) | 2010-06-09 | 2010-06-09 | Front-deep extensive-cultivation and back-shallow fine-crushing rotary cultivator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201682759U true CN201682759U (en) | 2010-12-29 |
Family
ID=43371049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202208514U Expired - Fee Related CN201682759U (en) | 2010-06-09 | 2010-06-09 | Front-deep extensive-cultivation and back-shallow fine-crushing rotary cultivator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201682759U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101869015A (en) * | 2010-06-09 | 2010-10-27 | 左佳奇 | Rotary cultivator realizing front deep and extensive cultivation and rear shallow and fine crushing |
| CN102428774A (en) * | 2011-10-11 | 2012-05-02 | 张景学 | Integrated machine for deep plowing, leveling, vibrating, squeezing, deep and central fertilizing and sowing |
| CN103782678A (en) * | 2014-02-20 | 2014-05-14 | 湖南长沙果福车业有限公司 | Outer wheel of rotary tiller |
| CN107041174A (en) * | 2017-02-08 | 2017-08-15 | 贵州大学 | A kind of vertical cutter formula rotary cultivator attachment |
| CN112813910A (en) * | 2020-12-30 | 2021-05-18 | 哈尔滨商业大学 | Hand-held small-sized pavement hard snow ice layer crusher and using method thereof |
| CN114586488A (en) * | 2022-03-22 | 2022-06-07 | 安徽春风农林机械制造有限公司 | Four-wheel-drive mini-tiller |
-
2010
- 2010-06-09 CN CN2010202208514U patent/CN201682759U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101869015A (en) * | 2010-06-09 | 2010-10-27 | 左佳奇 | Rotary cultivator realizing front deep and extensive cultivation and rear shallow and fine crushing |
| CN102428774A (en) * | 2011-10-11 | 2012-05-02 | 张景学 | Integrated machine for deep plowing, leveling, vibrating, squeezing, deep and central fertilizing and sowing |
| CN102428774B (en) * | 2011-10-11 | 2013-09-25 | 张景学 | Integrated machine for deep plowing, leveling, vibrating, squeezing, deep and central fertilizing and sowing |
| CN103782678A (en) * | 2014-02-20 | 2014-05-14 | 湖南长沙果福车业有限公司 | Outer wheel of rotary tiller |
| CN107041174A (en) * | 2017-02-08 | 2017-08-15 | 贵州大学 | A kind of vertical cutter formula rotary cultivator attachment |
| CN112813910A (en) * | 2020-12-30 | 2021-05-18 | 哈尔滨商业大学 | Hand-held small-sized pavement hard snow ice layer crusher and using method thereof |
| CN114586488A (en) * | 2022-03-22 | 2022-06-07 | 安徽春风农林机械制造有限公司 | Four-wheel-drive mini-tiller |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101869015B (en) | Rotary cultivator realizing front deep and extensive cultivation and rear shallow and fine crushing | |
| CN201682759U (en) | Front-deep extensive-cultivation and back-shallow fine-crushing rotary cultivator | |
| CN110291857A (en) | A kind of paddy cultivator | |
| CN102577667A (en) | Small-sized walking deep-tillage machine | |
| CN105638002B (en) | The clear ridge stalk of Striply deep loosening puddles combine | |
| CN202514247U (en) | Small walking deep ploughing machine | |
| KR200469752Y1 (en) | Plow with Cutter | |
| CN109964628A (en) | Stalk cutting crushes the collection buried ploughing apparatus of ditch | |
| CN106688347B (en) | Weeding machine for dry crops | |
| CN205648354U (en) | Rotary tillage part of rotary cultivator with clearance function | |
| CN201178558Y (en) | High-efficiency rotary tillage boat | |
| CN201682760U (en) | Coaxial rotary cultivator for deep rough cultivation and shallow fine crushing | |
| CN101869016B (en) | Coaxial rotary cultivator realizing deep and extensive cultivation and shallow and fine crushing | |
| CN104521347A (en) | Energy-efficient rotary cultivator | |
| CN208972002U (en) | Combed rotation gets rid of stalk and turns over the machine of burying | |
| CN204392784U (en) | Energy-efficient rotovator | |
| CN204518339U (en) | High-strength rotary blade | |
| CN201015257Y (en) | Cutting and plowing machine | |
| CN202617628U (en) | Subsoiling and stubble cleaning drive harrow | |
| CN209824358U (en) | Hand-held deep-loosening weeding machine | |
| WO2017031684A1 (en) | Rotary tiller | |
| CN207070602U (en) | Knife hammers combined furrowing and harrowing machine into shape | |
| CN206728527U (en) | No-tillage knife for no-tillage seeding machine is with opening up wasteland knife combined mechanism | |
| CN215735658U (en) | Novel soil planer | |
| CN2520627Y (en) | Deep tillage rotary plough |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101229 Termination date: 20120609 |