CN111279816A - Rotary tillage stubble burying device for wheat seeder suitable for wet and rotten fields - Google Patents

Abstract

The invention discloses a rotary tillage and stubble burying device for a wheat planter suitable for wet and rotten fields. The rotary tillage and stubble burying device comprises a rotary tillage part, a connecting part, a height adjustment mechanism and a central controller. The installation part matched with the connection part, the rotary tillage part includes a rotating shaft, several rotating blades, and a first motor for driving the rotation shaft to rotate; the connecting part includes a first connecting rod arranged at both ends of the rotating shaft; the installation part includes a rotating wheel , a second motor that controls the rotation angle of the rotating wheel, an extension rod integrally connected with the rotation wheel, the lower end of the first connecting rod is connected to the rotating shaft, the upper end of the first connecting rod is detachably connected to the extension rod, and the height adjustment mechanism includes a second The floating block is hinged between the connecting rod and the end of the extending rod, the rotating wheel is provided with a first angle sensor, and the hinge joint between the second connecting rod and the extending rod is provided with a second angle sensor, and the invention realizes the precise adjustment of the rotary tillage depth , suitable for farmland with different degrees of wet and rotten.

Description

A rotary tiller and stubble burying device for wheat planter suitable for wet and rotten fields

technical field

The invention belongs to the technical field of agricultural machinery, and in particular relates to a rotary tiller and stubble burying device for a wheat seeder suitable for wet and rotten fields.

Background technique

With the rapid development of modern agricultural mechanization, agricultural machinery has greatly reduced the hard work of farmers, and is more and more popular among farmers.

Driven soil tillage machines with rotating cutter teeth as working parts, also known as rotary tillers. At present, the rotary tillage and stubble burying devices suitable for wet and rotten fields mainly have the following problems: 1. The structure is complex and the overall structure is bulky and cannot be disassembled. 2. The depth of rotary tillage cannot be adjusted, and it cannot adapt to fields with different degrees of wetness.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a rotary tillage and stubble burying device for a wheat planter suitable for wet and rotten fields. The structure is simple, the rotary tillage and stubble burying device can be disassembled, and the rotary tillage depth can be accurately and automatically adjusted to meet the needs of fields with different wet and rotten degrees. Rotary tillage needs of 100%, and in the whole rotary tillage process, the rotary tillage depth is uniform.

In order to achieve the above purpose, the technical scheme of the present invention is: a rotary tillage and stubble burying device for a wheat planter suitable for wet and rotten fields, characterized in that the rotary tillage and stubble burying device comprises a rotary tillage part, a connecting part, a height An adjusting mechanism and a central controller, the wheat planter is provided with a mounting portion matching the connecting portion, and the rotary tiller includes a rotating shaft, a plurality of rotating blades equidistantly arranged in the axial direction of the rotating shaft, A first motor for driving the rotation of the rotating shaft, the connecting part includes a first connecting rod arranged at both ends of the rotating shaft, the mounting part includes a rotating wheel, a second motor for controlling the rotation angle of the rotating wheel, and the An extension rod integrally connected to the rotating wheel and extending along the radial direction of the rotating wheel, the lower end of the first connecting rod is connected to the rotating shaft, the upper end of the first connecting rod is detachably connected to the extension rod, the height adjustment The mechanism includes a floating block hinged with the end of the extension rod through a second link, the floating block is arranged at the front end of the wheat planter in the forward direction and in front of the rotary tillage part, and the lower surface of the floating block is on the surface of the wheat planter. The seeder is always in contact with the soil surface of the wet and rotten field during the forward process. The second connecting rod is provided with a number of equidistant hinge holes, the rotating wheel is provided with a first angle sensor, and the second connecting rod is provided with a first angle sensor. A second angle sensor is provided at the hinge joint with the extension rod, the central controller is signally connected with the first angle sensor, the second angle sensor, the first motor, and the second motor, and the The rotation angle value measured by the second angle sensor is sent to the central controller, and the central controller controls the start and stop of the second motor according to the received rotation angle value measured by the second angle sensor, thereby adjusting the arable land of the rotating blade depth, the central controller controls the rotational speed of the first motor.

Preferably, the detachable connection between the upper end of the first connecting rod and the extension rod is any one of bolt connection and threaded connection. When the connection method is a bolt, the first connecting rod and the extension rod are connected The connecting holes are through holes; when the connecting method is threaded, the connecting holes on the first connecting rod and the extending rod are threaded holes.

Preferably, the first connecting rod is a curved rod with an arc, which protrudes outward in a direction away from the wheat planter.

Preferably, the rotating blade is a serrated blade.

Preferably, the hinge point between the second link and the extension rod is point A, the center of the slider is point B, and L ₂ is the straight-line distance from point A to point B, and the second angle sensor uses In measuring the included angle α between the second link and the extension rod, the opening direction is close to the forward direction of the planter, the first angle sensor is used to measure the horizontal plane between the extension rod and the central axis of the rotating wheel. The included angle β, the center of the rotating wheel is point C, the distance from point C to point A is L ₁ , the center of the rotating shaft is point D, the distance from point C to point D is L ₃ , the distance between point C and point D is L 3 . The angle between the line segment between the points and the extension rod is γ.

Preferably, the method for measuring the angle β is as follows: connect a horizontal rod on the planter that coincides with the horizontal plane where the central axis of the rotating wheel is located, the horizontal rod extends into the vertical plane of the extending rod, and the first angle sensor measures The included angle between the horizontal rod located in the vertical plane of the extended rod and the extended rod.

Preferably, the distance between point B and the horizontal plane where the central axis of the rotating wheel is located is h, and the distance between point D and the horizontal plane where the central axis of the rotating wheel is located is H,

h=L ₁ ·sinβ-L ₂ ·sin(α-β)

H=L ₃ ·sin(γ-β).

The beneficial effects of the present invention are:

1. The rotary tillage and stubble burying device has a simple structure, and can be easily and detachably connected to the planter by means of bolts or threads, which is easy to disassemble and clean, and can also be disassembled and installed on other planters.

2. By setting a floating block in front of the forward direction of the rotary tillage and stubble burying device, the floating block contacts the uneven soil surface before the rotary tillage and stubble burying device, and the change of height is quantified by the angle sensor, and the floating block is calculated. The change value of the block height can be obtained to obtain the height change value that needs to be adjusted by the rotary tillage and stubble burying device, and then the height change value required to be adjusted by the rotary tillage and stubble burying device is converted into the rotation angle value of the rotating wheel. The precise adjustment of the rotary tillage depth of the rotary tillage and stubble burying device can be realized by controlling the start and stop of the second motor.

3. The rotary blade used for rotary tillage is a serrated blade, which enhances the contact area with the soil and is conducive to the full loosening of the soil.

Description of drawings

FIG. 1 is a schematic structural diagram of the rotary tillage and stubble burying device of the present invention.

Fig. 2 is a block diagram of signal control in the rotary tillage and stubble burying device of the present invention.

Fig. 3 is a schematic diagram of calculation of the position of the rotary tillage and stubble burying device of the present invention at a certain moment.

Fig. 4 is a schematic diagram of calculation of the position of the rotary tillage and stubble burying device of the present invention at another time.

Detailed ways

The present invention will be described in further detail below with reference to the specific embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, the drawings only show some but not all structures related to the present invention.

Please refer to FIGS. 1 and 2 , the present invention provides a rotary tillage and stubble burying device for a wheat planter suitable for wet and rotten fields. The rotary tillage and stubble burying device includes a rotary tillage part, a connecting part, and a height adjustment mechanism , the central controller, the wheat planter is provided with a mounting part that matches the connecting part, and the rotary tiller includes a rotating shaft 10, a plurality of rotating blades 9 arranged at equal distances in the axial direction of the rotating shaft 10 2. The first motor that drives the rotating shaft 10 to rotate, the connecting part includes a first connecting rod 5 arranged at both ends of the rotating shaft 10, the mounting part includes a rotating wheel 1, a first connecting rod for controlling the rotation angle of the rotating wheel 1 Two motors, an extension rod 3 integrally connected with the rotating wheel 1 and extending in the radial direction of the rotating wheel, the lower end of the first connecting rod 5 is connected to the rotating shaft 10, and the upper end of the first connecting rod 5 is connected to the rotating shaft 10. The extension rod 3 is detachably connected, and the height adjustment mechanism includes a floating block 8 hinged with the end of the extension rod 3 through the second link 7, and the floating block 8 is arranged at the front end of the wheat planter in the forward direction and located at the front end of the wheat planter. In front of the rotary tiller, the lower surface of the floating block 8 is always in contact with the soil surface of the wet and rotten field during the advancing process of the wheat planter, and the second connecting rod 7 is provided with a number of equidistant hinge holes 6 , a first angle sensor 2 is arranged on the rotating wheel 1, a second angle sensor 4 is arranged at the hinge of the second link 7 and the extension rod 3, and the central controller is connected to the first angle sensor 4. The angle sensor 2, the second angle sensor 4, the first motor, and the second motor are connected with signals, and the rotation angle value measured by the second angle sensor 4 is sent to the central controller, and the central controller The second motor is controlled to start and stop according to the received rotation angle value measured by the second angle sensor 4, so as to adjust the depth of cultivation of the rotary blade 9, and the central controller controls the rotation speed of the first motor.

The upper end of the first connecting rod 5 is detachably connected to the extension rod 3 by either bolt connection or threaded connection. When the connection method is a bolt, the first connecting rod 5 and the extension rod 3 are detachably connected. The connecting holes on the connecting rod are through holes; when the connecting method is threaded, the connecting holes on the first connecting rod 5 and the extending rod 3 are threaded holes.

The first connecting rod 5 is a curved rod with an arc, which protrudes outward in a direction away from the wheat planter.

The rotating blade 9 is a serrated blade.

The hinge point of the second link 7 and the extension rod 3 is point A, the center of the floating block 8 is point B, L ₂ is the straight line distance from point A to point B, and the second angle sensor 4 It is used to measure the included angle α between the second link 7 and the extension rod 3 when the opening direction is close to the forward direction of the planter, and the first angle sensor is used to measure the horizontal plane between the extension rod and the central axis of the rotating wheel. The included angle β between, the center of the rotating wheel 1 is point C, the distance from point C to point A is L ₁ , the center of the rotating shaft 10 is point D, the distance from point C to point D is L ₃ , so The angle between the line segment between the point C and the point D and the extension rod 3 is γ, and γ is a fixed value, which can be directly measured by a protractor.

The method for measuring the angle β is as follows: connect a horizontal rod which is coincident with the horizontal plane where the central axis of the rotating wheel is located on the planter, the horizontal rod extends into the vertical plane of the extending rod, and the first angle sensor is located in the The angle between the horizontal rod in the vertical plane of the extension rod and the extension rod.

The distance between point B and the horizontal plane where the central axis of the rotating wheel is located is h, and the distance between point D and the horizontal plane where the central axis of the rotating wheel 1 is located is H,

h=L ₁ ·sinβ-L ₂ ·sin(α-β)

H=L ₃ ·sin(γ-β).

Please refer to FIG. 3 and FIG. 4 , the working principle of the present invention: the floating block 8 is arranged at the front end of the wheat planter in the forward direction and in front of the rotary tiller, and the lower surface of the floating block 8 is in the forward process of the wheat planter. Always in contact with the soil surface of the wet and rotten field, the floating block 8 always knows the flatness of the soil to be tilled in advance before the rotary tillage device, and the height change of the floating block 8 directly causes the second connecting rod 7 to surround it and the extension rod 3. The change of the rotation angle at the hinge joint, the change of the rotation angle makes the angle α between the second link 7 and the extension rod 3 change, the angle α is measured by the second angle sensor 4, and the second link 7 and the extension rod 3 change. The initial angle between the extension rods 3 is α ₁ , the distance from point B to the horizontal plane where the central axis of the rotating wheel 1 is located is h, and the corresponding h value in the state of α ₁ is h ₁ , the second link The hinge point between 7 and the extension rod 3 is point A, the center of the rotating wheel is point C, the distance from point C to point A is L ₁ , the center of the floating block 8 is point B, and L ₂ is point A The straight-line distance to point B, the center of the rotating shaft 10 is point D, the distance from point C to point D is L ₃ , L ₁ , L ₂ , and the values of L ₃ can be directly measured by a scale, and the first angle sensor 2 is used to measure the angle β between the extension rod and the horizontal plane where the central axis of the rotating wheel is located, and connect a horizontal rod that coincides with the horizontal plane where the central axis of the rotating wheel is located on the planter, and the horizontal rod extends to the In the vertical plane of the extension rod, the first angle sensor measures the angle between the horizontal rod located in the vertical plane of the extension rod and the extension rod, the angle is β, and the initial angle of β is β ₁ , the distance between point D and the horizontal plane where the central axis of the rotating wheel is located is H, the corresponding H value in the state of β ₁ is H ₁ , the angle α of the slider changes during the working process, and becomes α ₂ , The corresponding angle β needs to be adjusted to the value of β _2. Since the floating block moves up and down with the change of soil surface height, the rotating blade 9 located on the bottom surface of the soil surface also needs to adjust the height according to the height change of the soil surface. The center of the floating block 8 The vertical height relative to the center of the rotating shaft 10 remains stable, that is, h ₁ -H ₁ =h ₂ -H2,

According to the formula h=L ₁ ·sinβ-L ₂ ·sin(α-β), H=L ₃ ·sin(γ-β), namely

L ₁ ·sinβ ₁ -L ₂ ·sin(α ₁ -β ₁ )-L ₃ ·sin(γ-β ₁ )=L ₁ ·sinβ ₂ -L ₂ ·sin(α ₂ -β ₂ )-L ₃ · sin(γ-β ₂ ), an equation, an unknown β ₂ , a unique solution can be obtained, the value of β ₂ can be obtained, and the second motor can be controlled to start and stop so that the rotation angle of the rotating wheel satisfies the value measured by the first angle sensor. The value is equal to the value of β ₂ , thus achieving the accuracy of the rotary tillage depth.

Note that the above are only preferred embodiments of the present invention and applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present invention. The scope is determined by the scope of the appended claims.

Claims (7)

1. a rotary tillage and stubble burying device for a wheat planter that is applicable to wet and rotten fields, is characterized in that, the rotary tillage and stubble burying device comprises a rotary tillage part, a connecting part, a height adjustment mechanism, a central controller, and the wheat The planter is provided with a mounting part matched with the connecting part, and the rotary tillage part includes a rotating shaft, a plurality of rotating blades arranged at equal distances in the axial direction of the rotating shaft, and a first motor that drives the rotating shaft to rotate , the connecting part includes a first connecting rod arranged at both ends of the rotating shaft, the mounting part includes a rotating wheel, a second motor for controlling the rotation angle of the rotating wheel, integrally connected with the rotating wheel and extending along the radial direction of the rotating wheel an extended extension rod, the lower end of the first connecting rod is connected to the rotating shaft, the upper end of the first connecting rod is detachably connected to the extension rod, and the height adjustment mechanism includes a second connecting rod and the The floating block hinged at the end of the extension rod is arranged at the front end of the wheat planter in the forward direction and in front of the rotary tillage part. The second link is provided with several equidistant hinge holes, the rotating wheel is provided with a first angle sensor, and the hinge between the second link and the extension rod is provided with There is a second angle sensor, the central controller is signally connected to the first angle sensor, the second angle sensor, the first motor, and the second motor, and the rotation angle value measured by the second angle sensor Sent to the central controller, the central controller controls the second motor to start and stop according to the received rotation angle value measured by the second angle sensor, so as to adjust the depth of cultivated land of the rotating blade, and the central controller controls the The speed of the first motor. 2 . The rotary tillage and stubble burying device for a wheat planter suitable for wet and rotten fields according to claim 1 , wherein the detachable connection between the upper end of the first connecting rod and the extension rod is a bolt connection. 3 . , any one of the threaded connections, when the connection method is a bolt, the connecting hole on the first connecting rod and the extension rod is a through hole; when the connection method is a thread, the first connecting rod and the extension rod are connected The connection holes are threaded holes. 3 . The rotary tillage and stubble burying device for a wheat planter suitable for wet and rotten fields according to claim 1 , wherein the first connecting rod is a curved curved rod, which is oriented toward the direction away from the wheat planter. 4 . Convex direction. 4 . The rotary tiller and stubble burying device for a wheat planter suitable for wet and rotten fields according to claim 1 , wherein the rotary blade is a serrated blade. 5 . 5 . The rotary tillage and stubble burying device for a wheat planter suitable for wet and rotten fields according to claim 1 , wherein the hinge point between the second connecting rod and the extending rod is point A, and the The center of the slider is point B, L ₂ is the straight-line distance from point A to point B, the second angle sensor is used to measure the angle α between the second link and the extension rod with the opening direction close to the forward direction of the planter, The first angle sensor is used to measure the angle β between the extension rod and the horizontal plane where the central axis of the rotating wheel is located, the center of the rotating wheel is point C, and the distance from point C to point A is L ₁ , The center of the rotation axis is point D, the distance from point C to point D is L ₃ , and the angle between the line segment between point C and point D and the extension rod is γ. 6. The rotary tillage and stubble burying device for wheat seeder that is applicable to wet and rotten fields according to claim 5, is characterized in that, the method for measuring angle β is: connect on the seeder a horizontal plane that coincides with the central axis of the rotating wheel. a horizontal rod, the horizontal rod extends into the vertical plane of the extended rod, and the first angle sensor measures the angle between the horizontal rod located in the vertical plane of the extended rod and the extended rod . 7. The rotary tillage and stubble burying device for a wheat planter suitable for wet and rotten fields according to claim 5, is characterized in that, the distance from point B to the horizontal plane where the central axis of the rotating wheel is located is h, and point D to The distance between the horizontal planes where the central axis of the rotating wheel is located is H, h=L ₁ ·sinβ-L ₂ ·sin(α-β) H=L ₃ ·sin(γ-β).

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