CN202104026U

CN202104026U - Bunch seeding device with variable-speed air chamber

Info

Publication number: CN202104026U
Application number: CN2011202228033U
Authority: CN
Inventors: 陈恒
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-28
Filing date: 2011-06-28
Publication date: 2012-01-11
Anticipated expiration: 2021-06-28

Abstract

The utility model relates to a part on an agricultural seeder, in particular to a bunch seeding device with a variable-speed air chamber, which can be applicable to a precision seeder. The bunch seeding device mainly comprises a bunch seeding roller (25), a film pressing wheel (1), a negative pressure seed metering device and a roller spindle (8), wherein the negative pressure seed metering device is matched with the roller spindle (8) through a bearing, and comprises an air chamber body (2) and an air closing block (23) which is fixedly linked with the roller spindle (8) in the air chamber body (2), an air chamber gear (4) is linked on the rear wall of the air chamber body (2) through an air chamber gear axle (13), the roller spindle (8) is provided with a casing (10) which is matched with the roller spindle (8) in a sliding or rolling way, and a center gear (12) is arranged on the casing (10) and sequentially meshed with the air chamber gear (4) and an internal gear (3) on an internal-tooth support (17), so as to enable the air chamber gear axle (13) to drive the negative pressure seed metering device to rotate simultaneously when rotating. The bunch seeding device has the advantages that precision seeding is realized in the form of combining the rotation of the negative pressure chamber body with the air closure of a sliding block, and the negative pressure chamber is good in leakproofness, so as to enable negative pressure to be more stable, reduce the air leakage of the negative pressure chamber body, improve the seed metering rate, further reduce the empty hole rate, and obviously improve the seeding speed.

Description

Speed change air cavity hole seeding arrangement

Technical field

The utility model relates to the parts on a kind of agricultural seeding machine, and particularly a kind of speed change air cavity hole seeding arrangement is applicable to using on the precision sower.

Technical background

Common air-sucking type seed-taking device (or claiming seeder) comprises seeds sucker and negative pressure cavity composition, during use, makes seeds sucker be fixed on the end face of negative pressure cavity through coupling spindle; Seeds sucker is a disk, and the circumferencial direction that prolongs disk border is uniformly distributed with the suction hole of equidistance, during work; Air intake duct through connecting with negative pressure cavity is bled, and seeds sucker drives through central shaft simultaneously, in the end face rotation of negative pressure cavity; Seeds sucker rotation purpose will be accomplished two tasks, and the one, be drawn onto suction hole (or two) to seed; The 2nd,, a seed that is drawn onto (handling through seed scraping device) is separated with seed-taking device under action of gravity at voltage discharging area (bottom of negative pressure cavity is provided with fan-shaped voltage discharging area).Seeds sucker cooperates because be slidingly matched (the two relatively rotates) with negative pressure cavity, and its sealed precision depends on the machining accuracy of seeds sucker and negative pressure cavity counterface, but guarantees that in relative motion sealing is impossible.Actual situation is, there is inevitable gap in the junction of seeds sucker and negative pressure cavity, causes gas leakage, and the result of gas leakage can cause negative pressure unstable, and then can occur inhaling the situation less than seed, makes planting rates decline.Such as: the Chinese patent document discloses a kind of air-sucking type seeding and film covering apparatus on June 17th, 1998, and publication number is CN2283960, and this device is to be made up of cylinder, drum shaft and press mold wheel; Its press mold wheel is connected as a single entity with cylinder; Be provided with seed chamber, seeds sucker and vacuum chamber in the cylinder chamber, seeds sucker is connected with cylinder, and seeds sucker, cylinder and press mold wheel are with being contained on the drum shaft; The seeds sucker periphery is provided with the suction hole of equidistance; Cylinder inner periphery limit is provided with seed reception bucket, is equipped with on the cylinder circumferential periphery and the corresponding duckbilled indenting tool of seed reception bucket, mulch film is housed below cylinder and the press mold wheel.Air-sucking type precision weighing seed implement wherein mainly is made up of vacuum cavity, seeds sucker, and seeds sucker is fixed on the end face of vacuum cavity; When work, seeds sucker and vacuum cavity relatively rotate, and are that negative pressure cavity is fixed on the support concretely; The seeds sucker rotation, such structure is difficult to guarantee the negative regulation of vacuum cavity, reason is when seeds sucker rotates; There is inevitable gap in the junction of seeds sucker and negative pressure cavity, causes gas leakage, and the size of air leakage is the great key element that guarantees the product negative regulation; Therefore; Technical staff of the same trade can control gas leakage through the improvement of material and the design expectation of fit system always, but because the structure problem of design itself does not obtain substantial solution.The inventor when promptly working, lets the air-sucking type seed-taking device directly rotate through changing the structure of seed-taking device, does not allow between seeds sucker and the vacuum cavity and produces relative motion, simultaneously other structure is made corresponding improvement and accomplishes the utility model.The utility model product makes planting rates almost reach 100%.

The utility model content

The purpose of the utility model is the weak point according to above-mentioned prior art, and a kind of air-sucking type precision weighing seed implement and speed change system that is applicable on the precise hole sowing device is provided, make the utlity model has speed of drilling fast the time planting rates almost reach 100%.

The purpose of the utility model is achieved in that

The utility model mainly comprises bunch planting cylinder 25, press mold wheel 1, negative pressure seed-taking device, drum spindle 8; Cooperate through bearing between negative pressure seed-taking device and the drum spindle 8, the negative pressure seed-taking device comprise air cavity 2 and in air cavity 2 with drum spindle 8 be fixedly connected hold one's breath piece 23 be fixedly connected at the seeds sucker 20 of air cavity 2 end faces, connect air cavity gears 4 through air cavity gear shaft 13 on the rear wall of air cavity 2; The sleeve pipe 10 that cooperates with its slip or rolling is set on the drum spindle 8; This sleeve pipe 10 is fixedly connected with press mold wheel 1, and central gear 12 is set on the sleeve pipe 10, this central gear 12 successively with air cavity gear 4, internal tooth support 17 on internal gear 3 engagements; Internal tooth support 17 1 ends are fixedly connected with kind case 16 or frame; The other end slides with sleeve pipe 10 or rolling bearing cooperates, and drives the rotation of negative pressure seed-taking device when making 13 rotations of air cavity gear shaft, and described internal tooth support 17 is the ladder barrel shape; The air cavity gear 4 that connects through air cavity gear shaft 13 on the rear wall of described air cavity 2 is for being at least 1; Or 2 or 3 or 4, described drum spindle 8 is a hollow tube, blank pipe extends in the air cavity 2; The piece 23 of holding one's breath that described in air cavity 2 and drum spindle 8 is fixedly connected slides or rolls with seeds sucker 20 and cooperates, holds one's breath block-shaped and contact area seeds sucker 20 covers a suction hole 19 at least; Described air cavity 2 centers are recess, and bearing sealed ring 5 and bearing 6 are set in depression.

The utility model has the advantages that: adopt vacuum cavity to rotate the smart amount of the form realization seeding of holding one's breath and combining with slide block, the negative pressure cavity good leak tightness makes negative pressure more stable, has reduced the air leakage of vacuum cavity, has improved kind of the rate of getting, and then reduces hole rate; Increase the service life of seeds sucker, reduced power consumption; Negative-pressure sealing tight reliable, serviceability stable, further improved smart quality and stability of measuring kind, can obviously improve speed of drilling.

Description of drawings

Fig. 1 is that the utility model master looks cutaway view;

Fig. 2 is the A-A cutaway view of Fig. 1;

Fig. 3 is the B-B cutaway view of Fig. 2.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model characteristic and other correlated characteristic are done further to detail:

Like accompanying drawing 1-3 signal, the label among the figure is represented respectively: 1-press mold wheel, 2-air cavity, 3-internal gear, 4-air cavity gear, 5-sealing ring, 6-bearing, 7-negative pressure channel, 8-drum spindle, 9-negative pressure pipe, 10-sleeve pipe (gear shaft holder), 11-bearing, 12-central gear, 13-air cavity gear shaft, 14,15-nut, 16-kind of case, 17-internal tooth support, 18-negative pressure cavity, 19-suction hole, 20-seeds sucker, 21-bearing block, 22-fill kind of a chamber, 23-piece of holding one's breath, 24-inoculation box, 25-bunch planting cylinder, 26-duck mouth, 27-negative pressure through-hole.

Like accompanying

drawing

1,2,3; The utility model mainly comprises bunch planting cylinder 25, press mold wheel 1, negative pressure seed-taking device, drum spindle 8; Cooperate through bearing 6 between negative pressure seed-taking device and the drum spindle 8; The negative pressure seed-taking device comprise air cavity 2 and in air cavity 2 with drum spindle 8 be fixedly connected hold one's breath piece 23 be fixedly connected at the seeds sucker 20 of air cavity 2 end faces; The piece of holding one's breath fits tightly on seeds sucker, and obviously also can adopt other not given shapes, the purpose of this shape is to make the simple contact area that can satisfy hold one's breath piece and seeds sucker simultaneously from technology to cover a suction hole (suction hole is inconsistent according to the planting requirement pitch of holes of Different Crop) at least; Hold one's breath and block-shapedly be preferably fan-shaped or rectangle or roller shape; The roller shape piece of holding one's breath can adopt elastomeric material to make, and such as rubber, under the pressure effect of elastomeric material, makes the roller shape piece of holding one's breath fit tightly on seeds sucker like this; Connect air cavity gear 4 through air cavity gear shaft 13 on the rear wall of air cavity 2; The sleeve pipe 10 that cooperates with its slip or rolling is set on the drum spindle 8, and this sleeve pipe 10 is fixedly connected with press mold wheel 1, and central gear 12 is set on the sleeve pipe 10; This central gear 12 successively with air cavity gear 4, internal tooth support 17 on internal gear 3 engagement; Internal tooth support 17 1 ends connect with the frame indirect securement through filling kind of chamber 22, and the other end slides with sleeve pipe 10 or rolling bearing cooperates, and the purpose of this design is when the gear train transmission; Internal gear 3 on the internal tooth support 17 is motionless, like this can be so that drive the rotation of negative pressure seed-taking device air cavity gear shaft 13 rotation the time; Described internal tooth support 17 is the ladder barrel shape; The air cavity gear 4 that connects through air cavity gear shaft 13 on the rear wall of described air cavity 2 is 2; Can certainly be one or three or four, say that from structure air cavity gear 4 is two and to be symmetric arrays more reasonable, about the quantity of air cavity gear 14 and arrangement mode according to above-mentioned disclosed technology contents; Other the technical staff of the same trade institute that is changed to is understood easily, repeats no more at this; Described drum spindle 8 is a hollow tube, and blank pipe extends in the air cavity 2; The piece 23 of holding one's breath that described in air cavity 2 and drum spindle 8 is fixedly connected slides or rolls with seeds sucker 20 and cooperates, holds one's breath block-shaped and contact area seeds sucker 20 covers a suction hole 19 at least; Described air cavity 2 centers are recess, and bearing sealed ring 5 and bearing 6 are set in depression, and central gear 12 is 3:1 or 2:1 or 4:1 with the rotating ratio of air cavity 2.Further specify, the utility model is in when work, through negative pressure pipe 9, negative pressure channel 7, the air in the air cavity 2 are extracted out, forms negative pressure cavity 18, and the negative pressure that negative pressure cavity 18 produces makes the seeds that fill in kind of the chamber 22 be adsorbed on the suction hole 19 of seeds sucker 20; The internal tooth support 17 of drum spindle 8 (hollow), ladder barrel shape, fill kind of chamber 22, plant case 16 and do not rotate; Central gear 12 becomes driving gear through sleeve pipe 10 (gear shaft holder) under the rotation of press mold wheel 1 drives; Under the situation that internal gear 3 does not rotate; In internal gear 3, rotate round drum spindle 8 when rotation takes place air cavity gear 4, air cavity gear 4 drives air cavity 2 and rotates, and air cavity 2 drives seeds sucker 20 and rotates; The seed that seeds sucker 20 drives on the suction hole 19 rotates; Slide when seed turns to that seed loses negative pressure when holding one's breath the position of piece 23, lose the seed of negative pressure because self gravitation drops to 24 li in inoculation box, fall then broadcast in the duck mouth 26 bury in.

Though below design and embodiment according to the utility model purpose have been done to elaborate with reference to accompanying drawing; But those of ordinary skills can recognize; Under the precondition that does not break away from the claim limited range; Still can make various improvement and conversion to the utility model, and this improvement and conversion still should belong to the protection domain of the utility model.

Claims

1. speed change air cavity hole seeding arrangement; Mainly comprise bunch planting cylinder, press mold wheel (1), negative pressure seed-taking device, drum spindle (8); It is characterized in that; Cooperate through bearing between negative pressure seed-taking device and the drum spindle (8); The negative pressure seed-taking device comprises air cavity (2) and the piece of holding one's breath (23) that is fixedly connected with drum spindle (8) in air cavity (2) and is fixedly connected at the seeds sucker (20) of air cavity (2) end face, connects air cavity gear (4) through air cavity gear shaft (13) on the rear wall of air cavity (2), and drum spindle (8) is gone up the sleeve pipe (10) that cooperates with its slip or rolling is set; This sleeve pipe (10) is fixedly connected with press mold wheel (1); Central gear (12) is set on the sleeve pipe (10), this central gear (12) successively with air cavity gear (4), internal tooth support (17) on internal gear (3) engagement, internal tooth support (17) one ends and frame directly or indirectly are fixedly connected; The other end slides or rolls with sleeve pipe (10) and cooperates, and drives the rotation of negative pressure seed-taking device when making air cavity gear shaft (13) rotation.

2. speed change air cavity hole seeding arrangement according to claim 1 is characterized in that described internal tooth support (17) is the ladder barrel shape.

3. speed change air cavity hole seeding arrangement according to claim 1 is characterized in that, the air cavity gear (4) that connects through air cavity gear shaft (13) on the rear wall of described air cavity (2) is for being at least 1 or 2 or 3 or 4.

4. speed change air cavity hole seeding arrangement according to claim 1 is characterized in that described drum spindle (8) is a hollow tube, and blank pipe extends in the air cavity (2).

5. speed change air cavity hole seeding arrangement according to claim 1; It is characterized in that; The piece of holding one's breath (23) that described in air cavity (2) and drum spindle (8) is fixedly connected slides or rolls with seeds sucker (20) and cooperates, holds one's breath block-shaped and contact area seeds sucker (20) covers a suction hole (19) at least.

6. speed change air cavity hole seeding arrangement according to claim 1 is characterized in that, described air cavity (2) center is a recess, in depression, bearing sealed ring (5) and bearing (6) is set.