CN102273343B

CN102273343B - Inner gear transmitting pneumatic hole seeding apparatus

Info

Publication number: CN102273343B
Application number: CN 201110176747
Authority: CN
Inventors: 陈恒
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-28
Filing date: 2011-06-28
Publication date: 2013-05-01
Anticipated expiration: 2031-06-28
Also published as: CN102273343A

Abstract

The invention relates to a part on an agricultural seeder, and especially relates to a pneumatic precise hole seeding apparatus which can be used on a precise seeder. The apparatus mainly comprises a hole seeding drum (16), a film pressing roller (1), a negative pressure seed fetching device, and a roller main shaft (9). The negative pressure seed fetching device comprises a seed fetching device sleeve (2) and an air chamber (5). The seed fetching device sleeve (2) is in a cylindrical form, and is sleeved on the air chamber (5). The inner side at the bottom of the seed fetching device sleeve (2) is slidably fit with the inner end-face of the air chamber (5). The outer side at the bottom of the seed fetching device sleeve (2) is fixedly connected to a seed absorbing plate (20). The film pressing roller orderly drives a central gear (12), a transition gear (14) and a ring gear (3), such that the seed fetching device sleeve (2) of the negative pressure seed fetching device rotates around the roller main shaft (9). The invention is advantaged in that: a connecting manner of the seed absorbing plate and the negative pressure chamber are changed, therefore a fixing manner of the seed absorbing plate is changed; the seed absorbing plate indirectly cooperates with the negative pressure chamber, such that the sealing capacity is substantially improved, a seed fetching rate is improved, and an empty-hole rate is reduced. According to the method, a traditional transmission mechanism is changed, such that the structure is compact and stable, the quality and stability of precise seed fetching are improved, and a seeding speed is improved.

Description

The air-suction type hole seeding device of internal tooth drive

Technical field

The present invention relates to the parts on a kind of agricultural seeding machine, a kind of aspiration dynamic formula precise hole sowing device particularly, applicable to using on precision sower.

Technical background

At present, on air-aspiration type precision planter and air-sucking type film, the application of precision drill in the precision drilling operation of China be more and more extensive, and the crop that can carry out precision drilling to all need such as corn, sunflower, seed melon, watermelon, cotton, beet, capsicums all can carry out precision drilling or precise hole sowing in ground.The core technology of these class facility all concentrates on air-suction type precision seed extractor, and the Strength and stability of its negative pressure will directly have influence on service behaviour and the smart seed-fetching quality of precision weighing seed implement.Usually the negative pressure air-suction type seed metering device in the bunch planting cylinder (or claiming seeder) comprises that seeds sucker and negative pressure cavity form, during use, by coupling spindle, make seeds sucker be fixed on the end face of negative pressure cavity, seeds sucker is a discoid thin slice, prolong the uniform equidistant suction hole of circumferencial direction of disk border, during work, by the air intake duct connected with negative pressure cavity, bleed, seeds sucker drives by central shaft simultaneously, end face rotation at negative pressure cavity, seeds sucker rotation purpose will complete two tasks, and the one,, seed is drawn onto to suction hole (or two); The 2nd,, the seed (processing through seed scraping device) be drawn onto is separated with seed-taking device under Action of Gravity Field at voltage discharging area (bottom of negative pressure cavity arranges fan-shaped voltage discharging area).The seeds sucker of discoid thin slice coordinates for be slidably matched (the two relatively rotates) with negative pressure cavity, its sealed precision depend on seeds sucker flatness and with the machining accuracy of negative pressure cavity counterface, but guarantee in relative motion that due to reasons in structure sealing is very difficult.Actual situation is, there is inevitable gap in the junction of seeds sucker and negative pressure cavity and causes gas leakage, and the result of gas leakage can cause negative pressure unstable, and then can may occur inhaling the situation less than seed, makes planting rates decline.For example: Chinese patent literature disclosed a kind of air-sucking seeding on June 17th, 1998, publication number is CN2283960, this device is by cylinder, drum shaft and pressing wheel form, its pressing wheel and cylinder are connected as a single entity, cylinder is provided with seed chamber in chamber, seeds sucker and vacuum chamber, seeds sucker is connected with cylinder, seeds sucker, cylinder and pressing wheel are with being contained on drum shaft, the seeds sucker periphery is provided with equidistant suction hole, cylinder inner circle periphery is provided with seed reception bucket, the duckbilled indenting tool corresponding with seed reception bucket is housed on the cylinder circumferential periphery, below cylinder and pressing wheel, mulch film is housed.This installs possible defect, and seed, when being inhaled by negative pressure cavity, is planted because structural unavoidable cause (such as part gas leakage) may cause inhaling causing leaking less than seed.

Summary of the invention

The objective of the invention is according to the above-mentioned existing weak point that is just, a kind of air-suction type precision seed extractor and speed change system be applicable on precise hole sowing device is provided, by changing the connecting mode of seeds sucker and vacuum cavity, change the sealing property that the fixed form of seeds sucker coordinates with vacuum cavity, decrease a leakage kind rate.

The object of the present invention is achieved like this:

The present invention mainly comprises bunch planting cylinder 16, pressing wheel 1, the negative pressure seed-taking device, drum spindle 9, the negative pressure seed-taking device connects with drum spindle 9, it is characterized in that, the negative pressure seed-taking device comprises seed-taking device sleeve 2 and air cavity 5, seed-taking device sleeve 2 is tubular, be enclosed within on air cavity 5, in the inboard of the bottom of seed-taking device sleeve 2 and the inner face of air cavity 5, be slidably matched, the outside and seeds sucker 20 in the bottom of seed-taking device sleeve 2 are fixedly connected, seed-taking device sleeve 2 coordinates with drum spindle 9 sliding bearings or rolling bearing, air cavity 5 is fixedly connected with drum spindle 9, central gear 12 is set on drum spindle 9, central gear 12 and drum spindle 9 sliding bearings or rolling bearing coordinates and be fixedly connected by connector with pressing wheel 1, be provided with ring gear 3 on the sleeve lining of seed-taking device sleeve 2, by gear shaft 13, transition gear 14 is set on air cavity 5, central gear 12 successively with transition gear 14, ring gear 3 engagements on seed-taking device sleeve 2, make the seed-taking device sleeve 2 of negative pressure seed-taking device prolong drum spindle 9 rotations, air cavity 5 includes annular negative pressure cavity 15, negative pressure intercommunicating pore 18, negative pressure cavity 6 and voltage discharging area 4, negative pressure hole 27 and annular negative pressure cavity 15 that suction hole 19 on seeds sucker 20 is provided with by seed-taking device sleeve 2, negative pressure intercommunicating pore 18, negative pressure cavity 6, negative pressure through-hole 2l, the negative tube 1l that one end of the drum spindle 9 of negative pressure channel 8 and hollow is provided with is communicated with, on the drum spindle 9 that the outside of the described bottom at seed-taking device sleeve 2 connects with seeds sucker 20, stage clip 22 is set, it is described that by gear shaft 13, transition gear 14 to be set on air cavity 5 be two or three or four, described central gear 12 is 3:1 or 2:1 or 4:1 with the rotating ratio of seed-taking device sleeve 2.

Advantage of the present invention is: by changing the connecting mode of seeds sucker and vacuum cavity, change the fixed form of seeds sucker, indirectly coordinate with vacuum cavity, obviously improve sealing property, reduce the air leakage of vacuum cavity, improved kind of the rate of getting, and then reduced hole rate; By changing traditional transmission mechanism, make compact conformation, stable, further improved quality and the stability of smart seed-fetching, improved speed of drilling.

The accompanying drawing explanation

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

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

Fig. 3 is the cutaway view of the B-B of Fig. 1;

Fig. 4 is another kind of scheme (3 transition gears) schematic diagram of Fig. 2.

Embodiment

Below in conjunction with accompanying drawing, to feature of the present invention and other correlation technique feature, the present invention is further detailed explanation, so that technical staff of the same trade is convenient to understand.

As accompanying drawing 1-4 signal, label in figure means respectively: 1-pressing wheel, 2-seed-taking device sleeve, 3-ring gear, 4-voltage discharging area, 5-air cavity, 6-negative pressure cavity, 7-bearing, 8-negative pressure channel, 9-drum spindle, 10-gear shaft holder, 11-negative tube, 12-driving gear, 13-gear shaft, 14-transition gear, 15-annular negative pressure cavity, 16-bunch planting cylinder, 17-kind of case, 18-negative pressure intercommunicating pore, 19-suction hole, 20-seeds sucker, 21-negative pressure through-hole, 22-stage clip, 23-kind of case mount pad, 24-locknut, 25-seed passing hole, 26-fill kind of a chamber, 27-negative pressure hole, 28-inoculation box, 29-duck mouth .

As accompanying

drawing

1, 2, 3 the present invention mainly comprise bunch planting cylinder 16, pressing wheel 1, the negative pressure seed-taking device, drum spindle 9, the negative pressure seed-taking device connects with drum spindle 9, the negative pressure seed-taking device comprises seed-taking device sleeve 2 and air cavity 5, seed-taking device sleeve 2 is tubular, be enclosed within on air cavity 5, in the inboard of the bottom of seed-taking device sleeve 2 and the inner face of its air cavity 5, be slidably matched, changed like this structure that existing seeds sucker and air cavity inner face directly are slidably matched, and seed-taking device sleeve 2 is relatively thick, its shape causes rotating more stable, in practice, inhaling kind of a rate obviously improves, the outside and seeds sucker 20 in the bottom of seed-taking device sleeve 2 are fixedly connected, such connecting mode, still replacing seeds sucker characteristics (according to shape and the agriculture requirement of Different Crop seed) have easily been retained, seed-taking device sleeve 2 slides or rolls with drum spindle 9 and coordinates, in cooperation place, can it be sealed and matched by the mode that increases sealing ring, air cavity 5 is fixedly connected with drum spindle 9, central gear 12 is set on drum spindle 9, central gear 12 slides or rolls with drum spindle 9 and coordinates and be fixedly connected by connector with pressing wheel 1, the implication of connector described here is, synchronize arbitrary shape of rotating or the connector of structure with pressing wheel guaranteeing central gear 12, be provided with ring gear 3 on the sleeve lining of seed-taking device sleeve 2, by gear shaft 13, transition gear 14 is set on air cavity 5, central gear 12 successively with transition gear 14, ring gear 3 engagements on seed-taking device sleeve 2, because transition gear 14 is fixed on air cavity 15, the axle of transition gear 14 is relatively-stationary, therefore when pressing wheel rotarilys actuate central gear 12 rotation, make the seed-taking device sleeve 2 of negative pressure seed-taking device prolong drum spindle 9 rotations, on the drum spindle 9 that the outside of the described bottom at seed-taking device sleeve 2 connects with seeds sucker 20, stage clip 22 is set, the effect of this stage clip is, makes the laminating more that is slidably matched of the inner face of seed-taking device sleeve 2 and air cavity 5, it is described that by gear shaft 13, transition gear 14 to be set on air cavity 5 be one.As accompanying drawing 4 signals, transition gear 14 also can be three, can certainly make two or four, from structure transition gear 14, it is three and to be symmetric arrays more reasonable, about the quantity of transition gear 14 and arrangement mode according to published technology contents, other the technical staff of the same trade that is changed to easily understands, and does not repeat them here.Advance an explanation: air cavity 5 includes annular negative pressure cavity 15, negative pressure intercommunicating pore 18, negative pressure cavity 6 and voltage discharging area 4 usually, and the opposite side of air cavity 5 is fixed with the gear shaft of transition travelling gear 14, central gear 12 slides or rolls with drum spindle 9 and coordinates and be fixedly connected by connector with pressing wheel 1, gear shaft holder 10 is provided with bearing chamber and central gear 12, the excircle of its bearing chamber end is connected in the center of pressing wheel 1, drum spindle 9(hollow) be connected in the bunch planting centre of the drum in the bearing chamber of gear shaft holder 10 by bearing 7, drum spindle 9 is fixedly connected through center and air cavity 5 sealings of air cavity 5, kind of case 17 is connected in the other end of drum spindle 9 by the connecting mode of the key connected mode that is provided with between kind of case mount pad 23 and drum spindle 9 or semicircle orifice and half circular shaft, its drum spindle 9 that connects end is provided with locknut 24, one end of seed-taking device sleeve 2 seeds sucker 20 that is fixedly connected, on drum spindle 9 between seeds sucker 20 and kind case mount pad 23, stage clip 22 is set, this stage clip withstands on seeds sucker, the negative pressure hole 27 that the suction hole 19 on seeds sucker 20 is provided with by seed-taking device sleeve 2 and annular negative pressure cavity 15, negative pressure intercommunicating pore 18, negative pressure cavity 6, negative pressure through-hole 21, negative pressure channel 8 and drum spindle 9(hollow) the negative tube 11 that is provided with of an end be communicated with, pressing wheel 1 is fixedly connected with bunch planting cylinder 16, and the excircle of bunch planting cylinder 16 is provided with duck mouth 29, is provided with inoculation box 28 between the inner periphery of bunch planting cylinder 16 and aspiration seed-taking device.During work, drum spindle 9, air cavity 5 and kind case 17 connect as a whole, and connect with tractor traction frame by drum spindle 9, under the traction drive of hitch frame, these parts do not rotate, and bunch planting cylinder and pressing wheel rotate, pressing wheel 1 drives the rotation of central gear 12, central gear 12 drives transition travelling gear 14 and rotates, transition travelling gear 14 drives 2 rotations of seed-taking device sleeve, seeds sucker 20 rotations thereupon, central gear 12 is 3:1 or 2:1 or 4:1 with the rotating ratio of seed-taking device sleeve 2.Under the duty of cylinder, seed by kind of case 17 inside by seed passing hole 25 enter fill kind of chamber 26 interior after, just by suction hole 19, adsorbed, along with the rotation of bunch planting cylinder drive seeds sucker 20, the seed be adsorbed just is sucked from and fills kind of chamber 26 and produced and fill outside kind of chamber 26, when turning to voltage discharging area 4 position of air cavity 5, because suction hole 19 communicates and loses suction with atmosphere, seed just falls into inoculation box 28 in the effect of deadweight, enters duck mouth 29, and by bunch planting in ground, complete precision drilling.

Although below with reference to accompanying drawing, the design according to the object of the invention and embodiment have been done to elaborate; 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 present invention, and this improvement and conversion still should belong to protection domain of the present utility model.

Claims

1. the air-suction type hole seeding device of internal tooth drive, mainly comprise bunch planting cylinder (16), pressing wheel (1), the negative pressure seed-taking device, drum spindle (9), the negative pressure seed-taking device connects with drum spindle (9), it is characterized in that, the negative pressure seed-taking device comprises seed-taking device sleeve (2) and air cavity (5), seed-taking device sleeve (2) is tubular, be enclosed within on air cavity (5), in the inboard of the bottom of seed-taking device sleeve (2) and the inner face of air cavity (5), be slidably matched, the outside and seeds sucker (20) in the bottom of seed-taking device sleeve (2) are fixedly connected, seed-taking device sleeve (2) coordinates with drum spindle (9) sliding bearing or rolling bearing, air cavity (5) is fixedly connected with drum spindle (9), central gear (12) is set on drum spindle (9), central gear (12) and drum spindle (9) sliding bearing or rolling bearing coordinates and be fixedly connected by connector with pressing wheel (1), be provided with ring gear (3) on the sleeve lining of seed-taking device sleeve (2), above by gear shaft (13), transition gear (14) is set at air cavity (5), central gear (12) successively with transition gear (14), ring gear (3) engagement on seed-taking device sleeve (2), make the seed-taking device sleeve (2) of negative pressure seed-taking device rotate along drum spindle (9), air cavity (5) includes annular negative pressure cavity (15), negative pressure intercommunicating pore (18), negative pressure cavity (6) and voltage discharging area (4), the negative pressure hole (27) that suction hole (19) on seeds sucker (20) is provided with by seed-taking device sleeve (2) and annular negative pressure cavity (15), negative pressure intercommunicating pore (18), negative pressure cavity (6), negative pressure through-hole (2l), the negative tube (1l) that one end of the drum spindle (9) of negative pressure channel (8) and hollow is provided with is communicated with.

2. the air-suction type hole seeding device of internal tooth drive according to claim 1, is characterized in that, on the drum spindle (9) that the outside of the described bottom at seed-taking device sleeve (2) connects with seeds sucker (20), stage clip (22) is set.

3. the air-suction type hole seeding device of internal tooth drive according to claim 1, is characterized in that, described is two or three or four at the upper transition gear (14) arranged by gear shaft (13) of air cavity (5).

4. the air-suction type hole seeding device of internal tooth drive according to claim 1, is characterized in that, described central gear (12) is 3:1 or 2:1 or 4:1 with the rotating ratio of seed-taking device sleeve (2).