CN202026589U

CN202026589U - Synchronized scrolling air cavity type precise quantity hole sowing device

Info

Publication number: CN202026589U
Application number: CN2011201262272U
Authority: CN
Inventors: 徐艺
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-04-26
Filing date: 2011-04-26
Publication date: 2011-11-09
Anticipated expiration: 2021-04-26

Abstract

The utility model relates to a component of an agricultural seeder, in particular to a synchronized scrolling air cavity type precise quantity hole sowing device, which is applicable to a precise quantity hole sowing device, and mainly comprises a hole sowing roller (1), a membrane pressing wheel (2), and a negative pressure seed taking apparatus main body (18) which are connected with a roller main shaft (6) through bearings, the membrane pressing wheel (2) is fixedly connected with the negative pressure seed taking apparatus main body (18) through a reinforcing plate (3) fixedly connected with the membrane pressing wheel (2) or through a connecting piece directly, and the negative pressure seed taking apparatus main body (18) is internally provided with an air sealing block (27) fixedly connected with the roller main shaft (6). The device has the advantages that precise quantity sowing is realized by adopting the manner of combination of the negative cavity rotation and air sealing by the slide block, the negative cavity has good sealing property, so that the negative pressure is more stable, the air leakage volume of the negative cavity is reduced, seed taking rate is improved, cavity rate is lowered, and seeding speed is obviously improved.

Description

Synchronous rolling air cavity type precise hole sowing device

Technical field

The utility model relates to the parts on a kind of agricultural seeding machine, and particularly a kind of synchronous rolling air cavity type precise hole sowing device is applicable to using on the precision sower.

Technical background

At present, along with the development that deepens continuously of precision agriculture, paces have also been accelerated to the agricultural machinery modernization development as the precision drilling farm machinery of sowing link in the precision agriculture.Especially a kind of precise hole sowing facility, because the needs of expensive breeding and accurate agronomy, the new technology of these facility continued to bring out in recent years, new product constantly emerges, the application of precise hole sowing machine in the precision drilling operation of China more and more widely can be carried out precision drilling or precise hole sowing to the crop that all need such as corn, sunflower, seed melon, watermelon, cotton, beet, capsicum carry out precision drilling almost omnipotently on air inhaling type fine sowing machine and the air-sucking type film.The core technology of these class facility all concentrates on the air-sucking type precision weighing seed implement, and the intensity of its negative pressure is measured kind of a quality with service behaviour and essence that stability will directly have influence on precision weighing seed implement.Usually the negative pressure air-sucking type seed-taking device in the bunch planting cylinder (or claiming seeder) comprises seeds sucker and negative pressure cavity composition, during use, make seeds sucker be fixed on the end face of negative pressure cavity by coupling spindle, seeds sucker is a disk, prolong the uniform equidistant suction hole of circumferencial direction of disk border, during work, bleed by the air intake duct that connects with negative pressure cavity, seeds sucker drives by central shaft simultaneously, end face rotation at negative pressure cavity, seeds sucker rotation purpose will be finished two tasks, and the one, seed is drawn onto suction hole (or two); The 2nd,, a seed (handling through seed scraping device) that is drawn onto 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 the negative pressure instability, and then the situation less than seed can may occur inhaling, makes planting rates decline not reach 100% planting rates.Chinese patent literature discloses a kind of air-sucking type seeding and film covering apparatus on June 17th, 1998, publication number is CN2283960, this device is by cylinder, drum shaft and press mold wheel constitute, its press mold wheel is connected as a single entity with cylinder, cylinder is provided with seed chamber in the chamber, seeds sucker and vacuum chamber, seeds sucker is connected with cylinder, seeds sucker, cylinder and press mold wheel are with being contained on the drum shaft, the seeds sucker periphery is provided with equidistant suction hole, cylinder inner periphery limit is provided with seed reception bucket, be equipped with on the cylinder circumferential periphery and the corresponding duckbilled indenting tool of seed reception bucket, mulch film be housed below cylinder and the press mold wheel.The possible defective of this device is, seed is when being inhaled by negative pressure cavity, because structural unavoidable cause (such as part gas leakage) may cause inhaling less than seed, can cause leaking and plant, so utility model people is through experimental study, expect not allow seeds sucker and negative pressure cavity relative motion, but allow negative pressure inhale the whole rotation of kind of device, make seeds sucker and negative pressure cavity combine closely, solve the gas leakage problem, be but relate to following technical barrier, because negative pressure cavity needs continual bleeding when work, must need the control of pipeline or circuit,, structurally interfere with each other easily between pipeline or the circuit if negative pressure is inhaled kind of a device unitary rotation.

The utility model content

The purpose of this utility model is according to the above-mentioned existing weak point that just is, a kind of air-sucking type precision weighing seed implement that is applicable on the precise hole sowing device is provided, and makes the planting rates of described device almost reach 100%.

The purpose of this utility model is achieved in that

The utility model mainly comprises bunch planting cylinder 1, press mold wheel 2, negative pressure seed-taking device body 18, wherein connect by bearing between bunch planting cylinder 1, press mold wheel 2, negative pressure seed-taking device body 18 and the drum spindle 6, press mold wheel 2 is by the stiffener 3 that is fixedly connected with it or directly be fixedly connected the piece 27 of holding one's breath that setting and drum spindle 6 are fixedly connected negative pressure seed-taking device body 18 in negative pressure seed-taking device body 18 by connector; Described press mold wheel 2 is fixedly connected by connector by the stiffener 3 that is fixedly connected with it and negative pressure seed-taking device body 18, and its connector is the sleeve pipe that is socketed on the drum spindle, sleeve pipe and drum spindle 6 matched in clearance; Described drum spindle 6 is a hollow tube, and blank pipe extends in the negative pressure cavity 19 in the negative pressure seed-taking device body 18; Described negative pressure seed-taking device body 18 is stepped, and bearing sealed ring and bearing are set in the stair-stepping boss; Described negative pressure seed-taking device body 18 is to be depression in the air cavity, and bearing sealed ring 22 and bearing are set in the depression; Seeds sucker 21 in the described negative pressure seed-taking device body 18 is fixedly connected in the end of negative pressure seed-taking device body 18, the piece of holding one's breath is set in negative pressure cavity 19, the hold one's breath piece support 30 of piece of holding one's breath by being fixedly connected with drum spindle 6, piece and the seeds sucker 21 of holding one's breath slides or rolls and cooperate, holds one's breath block-shaped and contact area seeds sucker covers a suction hole 20 at least; Described and press mold wheel 2 stiffeners that are fixedly connected 3 are cylindrical bump 4, and stiffener bearing 9 and bearing sealed ring are set in the inside of cylindrical bump 4; In the negative pressure cavity 19 of described negative pressure seed-taking device body 18 piece 27 of holding one's breath that is provided with in the piece cavity of holding one's breath being set is shaped as fan-shaped or rectangle.

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 is tightly reliable, serviceability is stable, has further improved the smart quality and the stability of planting of measuring, and can obviously improve speed of drilling.

Description of drawings

Fig. 1 is a kind of the utility model structure cutaway view;

Negative pressure seed-taking device cutaway view in the accompanying drawing 1 of Fig. 2, the B-B cutaway view of accompanying drawing 3;

Fig. 3 is the A-A cutaway view of Fig. 2;

Fig. 4 is 1 one kinds in the accompanying drawing structure partial enlarged drawing of holding one's breath.

Embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.

As accompanying drawing 1-4 signal, the label among the figure is represented respectively: 1-bunch planting cylinder, 2-press mold wheel, 3 stiffeners, the 4-cylindrical bump, the 5-hitch frame, 6-drum spindle (hollow shaft), the 7-negative pressure channel, the 8-suction hole, 9-stiffener bearing, defeated kind of the box of 16-inoculation, 17-kind case, 18-negative pressure seed-taking device body, the 19-negative pressure cavity, the 20-suction hole, the 21-seeds sucker, the 22-bearing sealed ring, 23-nut 24-negative pressure hole, 25-deposits kind of a chamber, 26-enters kind of a hole, 27 pieces of holding one's breath, 28-seeds sucker sealing ring, 29-compresses spring, the 30-piece support of holding one's breath, 31-duck mouth.

Embodiment

As accompanying drawing 1,2,3,4, the utility model mainly comprises bunch planting cylinder 1, press mold wheel 2, negative pressure seed-taking device body 18, wherein connect by bearing between bunch planting cylinder 1, press mold wheel 2, negative pressure seed-taking device body 18 and the drum spindle 6, press mold wheel 2 is by the stiffener 3 that is fixedly connected with it or directly be fixedly connected the piece 27 of holding one's breath that setting and drum spindle 6 are fixedly connected negative pressure seed-taking device body 18 in negative pressure seed-taking device body 18 by connector; Described press mold wheel 2 is fixedly connected by connector by the stiffener 3 that is fixedly connected with it and negative pressure seed-taking device body 18, and its connector is the sleeve pipe that is socketed on the drum spindle, sleeve pipe and drum spindle 6 matched in clearance; Described drum spindle 6 is a hollow tube, and blank pipe extends in the negative pressure cavity 19 in the negative pressure seed-taking device body 18; Described negative pressure seed-taking device body 18 is stepped, and bearing sealed ring and bearing are set in the stair-stepping boss; Described negative pressure seed-taking device body 18 is to be depression in the air cavity, and bearing sealed ring 22 and bearing are set in the depression; Seeds sucker 21 in the described negative pressure seed-taking device body 18 is fixedly connected in the end of negative pressure seed-taking device body 18, the piece of holding one's breath is set in negative pressure cavity 19, the hold one's breath piece support 30 of piece of holding one's breath by being fixedly connected with drum spindle 6, hold one's breath piece and seeds sucker 21 is slidingly matched, and holds one's breath block-shapedly to cover a suction hole 20 at least with contact area seeds sucker; Described and press mold wheel 2 stiffeners that are fixedly connected 3 are cylindrical bump 4, and stiffener bearing 9 and bearing sealed ring are set in the inside of cylindrical bump 4; In the negative pressure cavity 19 of described negative pressure seed-taking device body 18 piece 27 of holding one's breath that is provided with in the piece cavity of holding one's breath being set is shaped as fan-shaped or rectangle; Holding one's breath is slidingly matched between piece support and the slide block, can fit tightly on seeds sucker under pressure at the effect lower slider of spring 29 piece of holding one's breath.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 for technology to cover a suction hole 20(suction hole at least be inconsistent according to the planting requirement pitch of holes of Different Crop); Can also be the block-shaped roller shape that is of holding one's breath that is provided with in the piece cavity of holding one's breath is set in the described negative pressure seed-taking device body 18, the roller shape piece of holding one's breath can adopt elastomeric material to make, such as rubber, under the pressure effect of elastomeric material, make the roller shape piece secret of holding one's breath be fitted on the seeds sucker like this.Drum spindle 6 parts at negative pressure seed-taking device body 18 centers are hollow shaft, this hollow shaft has the channeling that produces negative inspiratory pressure and also has the function that fixedly installs the piece support of holding one's breath outward, when being the rotation of air-sucking type seed-taking device, drum spindle 6 does not rotate, the piece of holding one's breath that is fixedly connected with it does not rotate yet, seed is inhaled on the suction hole on the seeds sucker 21 20, when suction hole 20 held one's breath piece when holding one's breath seed under action of gravity, fall to defeated kind of the box 16 of inoculation, duck mouth 31; In negative pressure cavity 19 and seeds sucker 21 connection places seeds sucker sealing ring 28 is set, the sealing circle is necessary in some cases, be more prone to sealing like this, why interchangeable seeds sucker (live and connect) is set, and directly and vacuum cavity be designed to one, the agriculture requirement that is based on different crops is inconsistent, and the size and the spacing of suction hole change, and can design the seeds sucker of multiple aperture, pitch-row according to agriculture requirement.1-4 shows as accompanying drawing, the utility model is when work, tractor is by the drum spindle 6 of hitch frame 5 pulling hollow shapes, the bunch planting cylinder 1, the press mold wheel 2 that drive the band duck mouth that contacts with ground roll and move ahead, bleed by suction hole 8 by negative-pressure air fan or negative pressure pump simultaneously, by negative pressure channel 7, the negative pressure hole 24 that connects with vacuum cavity, make that the negative pressure cavity in the negative pressure seed-taking device body 18 continues to produce negative pressure.Seeds sucker is identical with the rotating speed of bunch planting cylinder, and wherein seeds sucker and negative pressure seed-taking device body 18 are fixedly connected, and the purpose of doing like this is to reduce the negative pressure loss as far as possible.At first; seed enters by seed inlet 26 from kind of case 17 and deposits kind of chamber 25; negative pressure seed-taking device body 18 drives seeds sucker 21 and rotates in depositing kind of chamber 25; seed is held by equally distributed suction hole 20 on the seeds sucker 21; hold one's breath (piece of holding one's breath is fixedly connected by support and drum spindle) during piece in rotating to negative pressure seed-taking device body 18; the disappearance of negative pressure, one or two (according to agriculture requirement) seeds are imported into defeated kind of the box 16 of inoculation by gravity, further arrive duck mouth 31.In addition, the bearing chamber of design one spill in negative pressure cavity 19 is placed bearing sealed ring 22 and bearing in the bearing chamber, and seeds sucker 21 can prevent gas leakage by nut 23 with placing bearing sealed ring 22 and bearing locking in the bearing chamber; Stiffener 3 can be designed to the boss shape, and bearing 9 is set, and such design makes structure more stable.

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 protection domain of the present utility model.

Claims

1. synchronous rolling air cavity type precise hole sowing device, mainly comprise bunch planting cylinder (1), press mold wheel (2), negative pressure seed-taking device body (18), it is characterized in that, connect by bearing between bunch planting cylinder (1), press mold wheel (2), negative pressure seed-taking device body (18) and the drum spindle (6), press mold wheel (2) is by the stiffener (3) that is fixedly connected with it or directly be fixedly connected the piece of holding one's breath (27) that setting and drum spindle (6) are fixedly connected negative pressure seed-taking device body (18) in by connector with negative pressure seed-taking device body (18).

2. synchronous rolling air cavity type precise hole sowing device according to claim 1, it is characterized in that, described press mold wheel (2) is fixedly connected by connector with negative pressure seed-taking device body (18) by the stiffener (3) that is fixedly connected with it, its connector is the sleeve pipe that is socketed on the drum spindle, sleeve pipe and drum spindle (6) matched in clearance.

3. synchronous rolling air cavity type precise hole sowing device according to claim 1 is characterized in that described drum spindle (6) is a hollow tube, and blank pipe extends in the negative pressure cavity (19) in the negative pressure seed-taking device body (18).

4. synchronous rolling air cavity type precise hole sowing device according to claim 1 is characterized in that described negative pressure seed-taking device body (18) is stepped, and bearing sealed ring and bearing are set in the stair-stepping boss.

5. according to claim 1ly it is characterized in that with fast air cavity roller hole seeding arrangement, described negative pressure seed-taking device body (18) be in the air cavity for depression, bearing sealed ring (22) and bearing are set in the depression.

6. synchronous rolling air cavity type precise hole sowing device according to claim 1, it is characterized in that, seeds sucker (21) in the described negative pressure seed-taking device body (18) is fixedly connected in the end of negative pressure seed-taking device body (18), the piece of holding one's breath is set in negative pressure cavity (19), the hold one's breath piece support (30) of piece of holding one's breath by being fixedly connected with drum spindle (6), hold one's breath piece and seeds sucker (21) slides or rolls and cooperate, holds one's breath block-shaped and contact area seeds sucker covers a suction hole (20) at least.

7. synchronous rolling air cavity type precise hole sowing device according to claim 1 is characterized in that, the described stiffener (3) that is fixedly connected with press mold wheel (2) is the cylindrical projection shape, and bearing (9) and bearing sealed ring are set in the inside of cylindrical projection.

8. synchronous rolling air cavity type precise hole sowing device according to claim 1 is characterized in that, the piece of holding one's breath (27) that is provided with in the piece cavity of holding one's breath is set in the negative pressure cavity (19) of described negative pressure seed-taking device body (18) is shaped as fan-shaped or rectangle.