CN116210407A - Inner seed guiding assembly of inner suction drum type precise hill-drop seed sowing device - Google Patents

Abstract

The invention relates to the technical field of seed metering devices, and particularly discloses an inner seed guiding component of a suction drum type precise hill-drop seed metering device; the seed metering device comprises a seed metering device shell, a seed metering disc and a seed suction roller, wherein one end face of the seed metering disc is concentrically and fixedly arranged on one side of the seed suction roller, a plurality of groups of suction holes are formed in the circumferential face of the seed suction roller, axial channels corresponding to the suction holes of each group are formed in the end face of the seed metering disc, a seed outlet is formed in the circumferential face of the seed metering disc, and a radial channel is formed between the seed outlet and the corresponding axial channel; the invention utilizes an inner seed guiding component matched with the inner suction roller type precision hill-drop seed sowing device to discharge seeds thrown by the inner suction roller from a radial channel of a seed sowing disc in a cavitation way, thereby realizing low-level seed sowing of the inner suction roller type seed sowing device and improving seed sowing cavitation.

Description

The internal seed guide assembly of the internal suction drum type precision hole sowing seed meter

technical field

The invention relates to the technical field of seed metering devices, and specifically discloses an internal seed guide assembly of an internal suction drum type precision hole sowing seed metering device.

Background technique

At present, the existing internal suction roller type precision hole sowing seed metering device mainly adopts the form of a seed introducing tube to carry out the seed introducing action in the seed metering process.

When the internal suction drum type seed meter is cast, due to the structural characteristics of the internal suction drum, the seeds cannot be thrown out of the inner space of the seed suction drum by their own gravity alone. The internal space is exported to complete the seeding of the seed meter. During the seed introduction process, collisions between the seeds and the wall of the seed introduction tube will inevitably occur, and since the collisions between various seeds and the wall of the seed introduction tube are random, their migration paths in the seed introduction tube are all different. Therefore, the random collision between the seeds and the wall of the seed guide tube will affect the discharge of multiple seeds in one hole from the seed guide tube at the same time, which further leads to poor cavitation of the seeds in one hole when they are planted in the soil. The seed sphericity is low, the diameter of the internal suction drum is large, and the rotation speed of the seeding drum is fast, which becomes more and more obvious.

Contents of the invention

The purpose of the present invention is to provide an internal seed guide assembly used in the internal suction roller type precision hole sowing seed metering device. Seeds thrown from the suction hole are discharged from the radial channel of the seeding disc in holes, so as to realize the low-position seeding of the internal suction drum seed metering device, improve the ability of seeding into holes, and solve the problem of internal suction with seed guide tubes The drum-type seed metering device has the problem of poor seed-forming cavitation caused by random impact between seeds and the wall of the seed guide tube.

The present invention is achieved through the following technical solutions:

An internal seed guide assembly of an internal suction drum type precision hole sowing seed meter, including a seed meter housing, a seed tray and a seed suction roller, one end of the seed tray is fixed concentrically on one side of the seed suction roller , the circumferential surface of the seed suction cylinder is evenly provided with several groups of suction holes, the end surface of the seed suction cylinder is uniformly provided with through holes equal to and corresponding to the number of suction hole groups, and the end surface of the seed discharge plate is provided with An axial channel corresponding to each through hole on the seed suction cylinder, a seed outlet corresponding to each axial channel is opened on the circumferential surface of the seed disk, and the seed outlet is connected to the corresponding axial channel. There are radial passages between the passages;

Each of the axial channels is connected with an inoculation box through an elastic member, and one end of the inoculation box protruding from the axial channel is connected with a pulley. The inoculation box is provided with an inoculation groove aligned with the radial channel, far away from the inoculation box. The upper end of the seed meter housing on one side of the seed suction cylinder is provided with an arc protrusion, and the pulley abuts against the arc protrusion during the rotation of the seed disc and pushes the inoculation groove on the inoculation box to the Align the setting with the suction hole.

As a specific configuration of the above scheme, the cross-sections of the axial channel, the through hole and the inoculation box are all set in the shape of an arch, and the inoculation groove is set on the flat end surface of the inoculation box.

As a further configuration of the above solution, the inoculation box is provided with a blocking piece close to the end surface of the seed suction drum at one end of the seed suction drum.

As a specific setting of the above scheme, a spring seat is provided at the end of the axial channel away from the side of the seed suction cylinder, and the outer end of the inoculation box protruding from the spring seat is connected to a pulley seat, and the pulley is rotatably connected to the pulley seat Above, the elastic member is a spring sleeved on the periphery of the inoculation box between the pulley seat and the spring seat.

As a specific configuration of the above solution, the radial channel is arranged radially outward from the side close to the center of the seed disk.

As a specific configuration of the above solution, the arc protrusion is composed of a push section, a far angle of repose section and a return section connected in sequence.

The above proposal discloses an internal seed guide component suitable for the internal suction drum type precision hole sowing seed meter composed of an inoculation box and a seeding tray. Under the action of the action, it moves axially along the seed-suction roller, and rotates synchronously with the seed-discharging disc along with the seed-suction roller. In the seeding arc section of the seed suction drum, the inoculation box is driven by the circular arc protrusion to compress the spring, and moves from the inside of the seed tray to the outside until the inoculation groove is completely docked with the suction hole on the seed suction drum.

After the seed suction roller completes the seeding, the seeds fall into the inoculation groove, and the inoculation box moves from the outside of the seeding tray to the inside under the action of spring force until the inoculation groove is docked with the radial channel. With the rotation of the seeding tray, The seeds in the inoculation box slide into the radial channel of the seeding tray under the action of its own gravity, and when the seed outlet of the radial channel of the seeding tray rotates to the outlet of the seed metering device housing, the seeds slide out under the action of gravity and centrifugal force Seed metering device to realize low-level hole formation and seed metering.

Compared with the prior art, the present invention has the following beneficial effects:

The internal seed guide assembly of the internal suction drum type precision hole sowing seed metering device disclosed by the present invention utilizes the internal seed guide assembly matched with the internal suction drum type precision hole sowing seed metering device to form holes for the seeds thrown by the internal suction drum Discharged from the radial channel of the seed metering disc, it realizes the low-position seeding of the internal suction drum seed metering device, improves the hole formation of the seeds, and can effectively solve the problem of the internal suction drum seed metering device with the seed guide tube due to the seeds and the guide tube. The problem of poor seeding hole formation caused by random impact on the wall of the seed tube, and the precision hole sowing effect of the entire seed meter will not become poor due to low seed sphericity, large diameter of the internal suction roller, and high speed of the seed metering roller. Compared with the seed introduction tube, the use effect is very excellent.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that are required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. Those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort.

Fig. 1 is a three-dimensional exploded view of the present invention;

Fig. 2 is a schematic diagram of the assembly of the seed-suction cylinder, the seed-discharging tray, and the inoculation box in the present invention;

Fig. 3 is a front view and a half-sectional view in Fig. 2 of the present invention;

Fig. 4 is the schematic diagram of the three-dimensional structure of the seeding tray in the present invention;

Fig. 5 is the semi-sectional schematic diagram of the seeding tray in the present invention;

Fig. 6 is the schematic diagram of the three-dimensional structure of the seed-suction cylinder in the present invention;

Fig. 7 is the schematic diagram of three-dimensional structure such as inoculation box, spring, roller among the present invention;

Fig. 8 is a schematic diagram of the three-dimensional structure of the seed meter housing and the arc protrusions in the present invention.

Detailed ways

In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only It is an embodiment of a part of the application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to accompanying drawings 1 to 8 and in conjunction with embodiments.

Example 1

Embodiment 1 discloses an internal seed guide assembly of an internal suction drum type precision hole sowing seed metering device, which will be described in detail below in conjunction with the entire seed metering device. With reference to accompanying drawing 1, the main body of this internal seed guide assembly comprises seed meter housing 1, seed disc 4 and seed suction cylinder 6, and seed disc 4 is concentrically fixed and installed on the end face of seed suction cylinder 6 by screw 5, and then The seed-suction cylinder 6 is connected with the seed-discharging shaft 7 , so that the seed-discharging disc 4 and the seed-suction cylinder 6 can rotate synchronously under the drive of the seed-discharging shaft 7 . In addition, a seed metering channel 101 is provided on the housing 1 of the seed metering device below the seed metering tray 4 , so that the seeds derived from the seed metering tray 4 can be accurately discharged from the entire seed metering device through the seed metering channel 101 .

Several seed outlets 403 are uniformly opened on the outer surface of the seed disk 4, and several axial passages 401 are provided in an annular array on the end surface of the seed disk 4, and the axial passages 401 run through the rows from front to back. The end face of the seed disk 4 is arranged in one-to-one correspondence with the seed outlet 403, and then a radial passage 402 is provided between the mutually corresponding seed outlet 403 and the axial passage 401, and the radial passage 402 is formed during the design process. The side close to the center of the circle is closed radially outward, so that the radial channel 402 has a larger seed receiving area, and then communicates with the seed outlet 403 through the closed end to discharge the seeds quantitatively. In addition, in order to ensure that the seed disc 4 can be stably installed on the end face of the seed-sucking cylinder 6, an annular inner wall 601 is provided at the end where the seed-absorbing drum 6 is connected to the seed-discharging disc 4, and through the gap between the annular inner wall 601 and the end face of the seed-discharging disc 4, The tight fit between them and the fastening effect of the screw 5 can ensure the stability of the connection between the two, and at the same time, a through hole 602 that is consistent with and aligned with the axial channel 401 is opened on the annular inner wall 601 .

An inoculation box 2 capable of moving axially along the seed meter is arranged in each axial channel 401 , and an inoculation groove 201 aligned with the radial channel 402 is opened on the inoculation box 2 . In order to facilitate the insertion of the inoculation box 2 into the axial channel 401, the inoculation box 2 is assembled in sections so that bolts, etc. The connecting piece is fixedly connected. At the same time, a stopper 202 is provided at the end of the inoculation box 2 near the seed suction cylinder 6 to prevent the inoculation box 2 from moving too much in the axial passage 401 so that the inoculation groove 201 and the radial passage 402 are misaligned. Several groups of suction holes 603 are uniformly opened on the circumferential surface of the seed-suction cylinder 6, and when one end of the inoculation box 2 axially moves into the seed-suction cylinder 6, the suction holes 603 on the seed-suction cylinder 6 and the inoculation groove 201 is aligned, and now the seed suction cylinder 6 can throw the adsorbed seeds into the inoculation tank 201 when performing the seeding action. At the same time, in order to ensure that the inoculation box 2 only moves axially and does not rotate relative to each other when it moves in the axial channel 401, the cross-sectional shapes of the axial channel 401 and the inoculation box 2 are all arranged in an arch shape, and the inoculation groove 201 is opened in the inoculation area. on the flat end of box 2.

The end of the inoculation box 2 away from the seed-suction cylinder 6 side is connected with a pulley seat 8, and on the pulley seat 8, the pulley 9 is connected with the rotation of the pin shaft, and the axial passage 401 on the side away from the seed-suction cylinder 6 is also provided. A spring seat 404 is provided at the end, and a spring 10 is sheathed on the inoculation box 2 between the spring seat 404 and the pulley seat 8 . In addition, an arc protrusion 11 is fixed on the inner wall of the seed meter housing 1 near the pulley 9, and the arc protrusion 11 is on the same circular line as some inoculation boxes 2, so that the seed tray 4 During the rotation, the pulley 9 at the end of the inoculation box 2 can be in contact with the arc protrusions 11 one by one, so that under the action of the spring 10, the entire inoculation box 2 can be moved to one end of the seed suction cylinder 6 along the axial passage 401. Push and pull back.

In the specific design process, referring to FIG. 8 , the arc protrusion 11 is composed of a thrust section 111 , a far-repose angle section 112 and a return section 113 in sequence. During the rotation of the seed-suction cylinder 6, when the pulley 9 at the end of the inoculation box 2 is not in contact with the arc protrusion 11, the inoculation box 2 makes the catch 202 at the end of the inoculation box 2 under the natural action of the spring 10 The left end surface will be closely attached to the annular inner wall 601 of the seed suction cylinder 6, so that the inoculation groove 201 is aligned with the radial channel 402; When the sections 111 are in contact, the push section 111 will drive the inoculation box 2 and compress the spring 10, so that the inoculation box 2 moves along the axial passage 401 to the seed suction roller 6 until the inoculation groove 201 on the inoculation box 2 and the inner suction roller 6 The suction hole 603 on the top is aligned; when the pulley 9 at the end of the inoculation box 2 turns into the far angle of repose section 112, the inoculation tank 201 and the suction hole 603 on the seed suction cylinder 6 will remain aligned for a period of time and rotate synchronously; when the inoculation box 2 When the pulley 9 at the end turns into the return section 113, the inoculation box 2 is reversely pulled back into the seeding tray 2 along the axial passage 401 under the elastic force of the spring 10 until the left end surface of the blocking piece 202 of the inoculation box 2 Closely fit on the inner wall 601 of the seed suction cylinder 6, at this time the inoculation groove 201 will be aligned and communicated with the radial channel 402 on the seed tray 4.

During the operation of the internal seed guide assembly of the internal suction drum type precision hole sowing seed meter disclosed by the present invention, the seed suction drum 6 is driven by the seed discharge shaft 7 to drive the seed discharge disc 4 to rotate synchronously. During the rotation process in the device housing 1, the negative pressure adsorption effect of the suction hole 603 is used to adsorb the seeds to make them rotate synchronously.

When the suction hole 603 with seeds and the inoculation box 2 corresponding to the suction hole 603 rotate to the upper end of the seed meter housing 1, the pulley 9 corresponding to the end of the inoculation box 2 starts to interact with the arc protrusion 11, When the pulley 9 rotates to the far angle of repose section 112, the inoculation groove 201 on the inoculation box 2 is facing the suction hole 603 rotated to the top, and then cut off the suction seed negative pressure corresponding to the suction hole 603 at this place, The seeds will fall into the inoculation tank 201 under the action of their own gravity.

Subsequently, the inoculation box 2 enters the return section 113 during the rotation of the seeding disc 4, and is gradually pulled back into the axial channel 401 under the action of its spring 10 until the inoculation groove 201 is opposite to the radial channel 402. together. When the inoculation box 2 is rotated from the upper end of the seed meter housing 1 to the lower end, the seeds in the inoculation groove 201 will fall into the radial passage 402, and when the seed outlet 403 corresponding to the radial passage 402 is connected to the seed discharge When the seeding channel 101 on the housing 1 is connected, the seeds in the radial channel 402 will be quantitatively discharged from the entire seed metering device through the seeding channel 101 .

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention. Inside.

Claims (6)

1. An internal seed guide assembly of an internal suction drum type precision hole sowing seed meter, comprising a seed meter housing, a seed metering disc and a seed suction roller, characterized in that one end of the seed metering disc is concentrically fixed and installed On one side of the seed-suction cylinder, several groups of suction holes are uniformly opened on the circumferential surface of the seed-suction cylinder, and through holes equal to and corresponding to the number of suction hole groups are uniformly opened on the end surface of the seed-suction cylinder. An axial channel corresponding to each through hole on the seed suction cylinder is opened on the end surface of the disc, and a seed outlet corresponding to each axial channel is opened on the circumferential surface of the seed discharge disc. A radial channel is opened between the mouth and the corresponding axial channel; Each of the axial channels is connected with an inoculation box through an elastic member, and one end of the inoculation box protruding from the axial channel is connected with a pulley. The inoculation box is provided with an inoculation groove aligned with the radial channel, far away from the inoculation box. The upper end of the seed meter housing on one side of the seed suction cylinder is provided with an arc protrusion, and the pulley abuts against the arc protrusion during the rotation of the seed disc and pushes the inoculation groove on the inoculation box to the Align the setting with the suction hole. 2. The internal seed guide assembly of the internal suction drum type precision hole sowing seed meter according to claim 1, wherein the cross-sections of the axial passage, the through hole and the inoculation box are all set in the shape of an arch, and the The inoculation groove is provided on the flat end face of the inoculation box. 3. The internal seed guide assembly of the internal suction drum type precision hole sowing seed meter according to claim 2, wherein the inoculation box is provided with an end close to the seed suction drum that fits the end surface of the seed suction drum. block. 4. The internal seed guide assembly of the internal suction drum type precision hole sowing seed meter according to any one of claims 1-3, characterized in that, the end of the axial passage away from the side of the seed suction drum is provided with The spring seat, the outer end of the inoculation box extending out of the spring seat is connected with a pulley seat, the pulley is rotatably connected on the pulley seat, and the elastic member is a spring sleeved on the periphery of the inoculation box between the pulley seat and the spring seat. 5. The internal seed guide assembly of the internal suction drum type precision hole sowing seed metering device according to claim 1, wherein the radial channel is closed radially outwards from the side close to the center of the seeding disc . 6. The internal seed guide assembly of the internal suction drum type precision hole sowing seed metering device according to claim 1, characterized in that, the circular arc protrusion is composed of a push section, a far angle of repose section and a return section sequentially connected .

Images