Non-linear motion wafer type cotton stalk pulling device

Abstract

The invention relates to a non-linear motion wafer type cotton stalk pulling device which comprises a rack, a left supporting frame and a right supporting frame, the left supporting frame and the right supporting frame are provided with an annular left guide rail, an annular right guide rail, a plurality of left sliding blocks and a plurality of right sliding blocks, the left sliding blocks and the right sliding blocks are matched with the left guide rail, and left clamping blocks and right clamping blocks are arranged on the outer sides of the left sliding blocks and the outer sides of the right sliding blocks respectively. A strip-shaped gap used for pulling out cotton stalks is formed between the left clamping block and the right clamping block on the opposite sides of the left guide rail and the right guide rail. The left guide rail and the right guide rail on the two sides of the strip-shaped gap are called a left working guide rail section and a right working guide rail section, and the left working guide rail section is divided into three sections from front to back in the advancing direction. The cotton stalk pulling-out resistance of soil to cotton stalks can be eliminated or reduced by changing the cotton stalk pulling-out speed, so that the cotton stalk pulling-out rate is reduced, and the cotton stalk pulling-out device is particularly suitable for cotton stalk pulling-out operation under the condition that the soil resistance is large.

Description

Technical Field

[0001] The invention relates to a cotton stalk pulling device which can reduce soil resistance suffered by cotton stalks during pulling, thereby reducing the cotton stalk breaking rate, and belongs to the technical field of agricultural machinery. Background Art

[0002] Existing cotton stalk pulling out mechanisms usually adopt a toothed disc or toothed roller mechanism, which bends or shears the cotton stalks when pulling out the cotton stalks. They are usually suitable for cotton stalks with thicker stems, but for cotton stalks with thin stems, the pulling out rate of the above-mentioned cotton stalk pulling out mechanisms is particularly high. After the cotton stalks are broken, the roots of the cotton stalks will remain in the soil, affecting the planting of the next season's crops.

[0003] In order to prevent cotton stalks from breaking during the pulling process, Chinese patent with publication number CN111869411A (hereinafter referred to as "comparative patent" for the convenience of description) discloses a clamp-type double-row cotton stalk pulling device, in which a left attached plate, a right attached plate and a middle attached plate are respectively installed on the outer chain plates of the left chain transmission mechanism, the right chain transmission mechanism and the middle chain transmission mechanism, and the cotton stalks are clamped by the strip gaps formed between the left and right attached plates and the middle attached plate, and the cotton stalks are pulled out of the soil by the upward movement of the stalk pulling component. When in use, the movement speed can be adjusted to reduce the bending or shearing force on the cotton stalks, thereby effectively reducing the phenomenon of cotton stalk breaking. However, the applicant found in practice that although the clamp-type double-row cotton stalk pulling device reduces the phenomenon of cotton stalk breaking, for cotton fields with greater soil firmness, the cotton stalks are subjected to greater soil resistance when being pulled out, resulting in more cotton stalks breaking during high-speed pulling.

[0004] Therefore, how to further reduce the soil resistance encountered by cotton stalks during pulling out, thereby reducing the pulling out rate, has become an urgent problem to be solved. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a clamping cotton stalk pulling device which can reduce the soil pulling resistance suffered by the cotton stalks during the pulling process, thereby reducing the cotton stalk breakage rate, and is particularly suitable for pulling out cotton stalks in hard cotton fields.

[0006] In order to solve the above technical problems, the technical solution proposed by the present invention is: a nonlinear motion clamp-type cotton stalk pulling device, comprising a frame, a left support frame and a right support frame, the left support frame and the right support frame are arranged on the frame, the left support frame is provided with an annular left guide rail, a plurality of left sliders matched with the left guide rail and a left driving mechanism for driving the left slider to move along the left guide rail, the right support frame is provided with an annular right guide rail, a plurality of right sliders matched with the right guide rail and a right driving mechanism for driving the right slider to move along the right guide rail, the left guide rail and the right guide rail are parallel and inclined at a preset angle relative to the horizontal plane, and the left guide rails on the opposite sides of the left guide rail and the right guide rails are provided. and the right slider form a strip-shaped gap for pulling out cotton stalks; the left guide rail and the right guide rail on both sides of the strip-shaped gap are called the left working guide rail segment and the right working guide rail segment, the left working guide rail segment is divided into three sections from front to back in the forward direction, namely the first left straight line segment, the left curved line segment and the second left straight line segment, the first left straight line segment and the second left straight line segment both gradually rise from front to back, the left curved line segment first lowers and then rises from front to back, and the right working guide rail segment is divided from front to back in the forward direction into the first right straight line segment, the right curved line segment and the second right straight line segment corresponding to the first left straight line segment, the left curved line segment and the second left straight line segment.

[0007] In the prior art, due to the existence of soil resistance, cotton stalks are prone to breakage due to excessive resistance to stalk pulling during high-speed stalk pulling. Based on the study of soil mechanical properties and crop pulling resistance, the applicant of the present invention found that cotton stalks are subject to soil resistance when pulling, and when the pulling force exceeds the limit that the cotton stalks can bear, it is easy to pull out. If the movement trend of the cotton stalks is changed when pulling out the cotton stalks, that is, the cotton stalks are appropriately moved downward during the process of pulling out the cotton stalks, the direction and action time of the pulling force can be changed, so that the soil resistance on the cotton stalks can be reduced, and the pulling force on the cotton stalks is instantly reduced. At this time, the soil around the roots of the cotton stalks has more time to redistribute, reducing the resistance of the soil to the roots of the cotton stalks, thereby significantly reducing the pulling rate. Therefore, the present invention respectively sets left curve segments and right curve segments on the left and right guide rails, so that the roots of the cotton stalks move downward, and then move upward to complete further stalk pulling operations, that is, the movement trajectory of the cotton stalks is nonlinear, that is, the "nonlinear movement" described in the present invention refers to the nonlinear movement of the cotton stalks after being clamped by the left and right clamps.

[0008] In addition, when the cotton stalks move downward appropriately during the pulling process, the soil is disturbed differently than when they are pulled upward directly. Pulling upward directly will cause the roots of the cotton stalks to quickly break away from the soil, forming larger cavities and destroying the original structure of the soil; while appropriate downward movement can redistribute soil particles more naturally around the cotton stalks, reducing the excessive soil voids and soil collapse caused by pulling. This helps maintain the physical properties of the soil, such as air permeability and water permeability, and is beneficial to subsequent crop planting. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The present invention will be further described below in conjunction with the accompanying drawings.

[0010] Figure 1 It is a schematic diagram of the structure of embodiment 1 of the present invention.

[0011] Figure 2 It is a schematic diagram of the cooperation between the left guide rail and the left slider.

[0012] Figure 3 yes Figure 2 A partial schematic diagram of the .

[0013] Figure 4 is a schematic diagram of the left slider.

[0014] Figure 5 It is a schematic diagram of the shape of the left working guide rail segment in Example 1.

[0015] Figure 6 It is a schematic diagram of the shape of the left working guide rail segment in Example 2.

[0016] Figure 7 It is a schematic diagram of the shape of the left working guide rail segment in Example 3.

[0017] Figure numerals: 1, left support frame; 2, right support frame; 3, left driving mechanism; 4, right driving mechanism; 5, left slider; 6, right slider; 7, left guide rail; 8, guide rod; 9, left positioning pin. DETAILED DESCRIPTION

[0018] Embodiment 1: This embodiment shows a nonlinear motion clamping type cotton stalk pulling device, such as Figure 1 As shown, it includes a frame (not shown in the figure), a left support frame 1 and a right support frame 2, the left support frame 1 and the right support frame 2 are arranged on the frame, the left support frame 1 is provided with an annular left guide rail 7, a plurality of left sliders 5 matched with the left guide rail 7 and a left driving mechanism 3 for driving the left slider 5 to move along the left guide rail 7, the right support frame 2 is provided with an annular right guide rail, a plurality of right sliders 6 matched with the right guide rail and a right driving mechanism 4 for driving the right slider 6 to move along the right guide rail, the left guide rail 7 is parallel to the right guide rail and is inclined at a preset angle relative to the horizontal plane, the outer sides of the left slider 5 and the right slider 6 are respectively provided with a left clamping block and a right clamping block, and a strip-shaped gap for pulling out cotton stalks is formed between the left and right clamping blocks on the opposite sides of the left guide rail 7 and the right guide rail. Figure 1 The left side in the middle is the feeding end, and the direction of the arrow on the left side indicates the feeding direction. The inclination angles of the left guide rail 7 and the right guide rail are related to the height of the cotton stalks.

[0019] Preferably, the left slider 5 is made of one piece with the left clamping block, and the right slider 6 is made of one piece with the right clamping block. Of course, the left slider 5 and the left clamping block can also be divided into two parts, which are connected together by fasteners. The configuration of the right slider 6 and the right clamping block is the same as that of the left slider 5 and the left clamping block. Figure 2 , Figure 3 and Figure 4 As shown, the left slider 5 is closely attached to the left support frame 1, and the left slider 5 is provided with a left positioning pin 9 inserted into the left guide rail 7. Similarly, the right slider 6 is closely attached to the right support frame 2, and the right slider 6 is provided with a right positioning pin inserted into the right guide rail. The left and right sliders 5 and 6 move through the cooperation of the left positioning pin 9, the right positioning pin and the left and right guide rails. Furthermore, the opposite sides of the left clamp block and the right clamp block are provided with anti-slip grooves, which can better clamp the cotton stalks.

[0020] In order to facilitate the cotton stalks to enter the strip-shaped gap, the frame is provided with a feeding mechanism at the feeding end of the strip-shaped gap. This is the prior art and will not be described in detail.

[0021] The left guide rail 7 and the right guide rail on both sides of the strip-shaped gap are called the left working guide rail section and the right working guide rail section, and the left working guide rail section and the right working guide rail section refer to the part of the left guide rail and the right guide rail used for pulling cotton stalks. Figure 5 As shown, the left working guide rail segment is divided into three segments from front to back along the forward direction, namely the first left straight line segment ( Figure 5 Middle A part), left curve segment ( Figure 5 Middle B) and the second left straight line segment ( Figure 5 In the middle C part), the first left straight line segment and the second left straight line segment both rise smoothly from front to back, the left curved line segment first lowers and then rises from front to back, and the right working guide rail segment is divided into the first right straight line segment, the right curved line segment and the second right straight line segment corresponding to the first left straight line segment, the left curved line segment and the second left straight line segment from front to back in the forward direction. In this way, during the cotton stalk pulling process, when the left slider 5 moves to the left curved line segment, the right slider 6 also moves to the right curved line segment accordingly, and the cotton stalks clamped by the left and right clamps first move downward and then move upward, the pulling force on the cotton stalks can be reduced instantly, and the soil around the roots of the cotton stalks has more time to redistribute, reducing the soil resistance to the roots of the cotton stalks upward, while dispersing the soil resistance on the cotton stalks, thereby significantly reducing the pulling rate.

[0022] The length of the left working guide section and the right working guide section is the stalk pulling distance. The applicant's practice shows that the left and right curve segments are preferably set at a stalk pulling distance of 3-5 cm to the left of the left working guide section and the right working guide section. When the cotton stalk moves to this position, the tension on the cotton stalk is large and needs to be buffered, and the soil around the root of the cotton stalk also has sufficient time to redistribute. Because of this, this embodiment makes the cotton stalk move downward and then upward at this position, and the tension on the cotton stalk can be reduced instantly. The redistributed soil also reduces the resistance to the cotton stalk when the cotton stalk is pulled out again, thereby reducing the pulling rate.

[0023] Preferably, the left driving mechanism 3 and the right driving mechanism 4 are chain driving mechanisms or belt driving mechanisms, and the left and right sliders 6 are provided with vertical through holes, and the chain driving mechanism or the belt driving mechanism is provided with a guide rod 8 that forms a moving pair with the through holes of the left and right sliders 6, so that the left and right sliders 6 can also move up and down along the guide rod 8 when sliding along the left guide rail 7 and the right guide rail, so that the left and right sliders 6 can smoothly pass through the left curve segment and the right curve segment.

[0024] This embodiment is an improvement based on the comparative patent described in the background technology. The main difference is that this embodiment is a single-row cotton stalk plucking, while the comparative document is a double-row cotton stalk plucking. This embodiment improves the running trajectory of the left and right clamping blocks, so that when plucking the cotton stalks, the movement trend of the cotton stalks is changed, that is, the cotton stalks are appropriately moved downward during the cotton stalk plucking process, so that the force between the left and right clamping blocks and the cotton stalks has a short buffer, reducing the breakage caused by excessive instantaneous tension, maintaining the integrity of the cotton stalks to the greatest extent, improving the utilization value of the cotton stalks, effectively reducing repeated operations, and improving the pulling efficiency. Of course, those skilled in the art are motivated to achieve a double-row cotton stalk plucking operation by improving the movement trajectory of the middle attached plate in the comparative patent.

[0025] Embodiment 2: This embodiment is an improvement on the embodiment 1, and the difference from the embodiment 1 is that: Figure 6 As shown, a left horizontal segment is provided between the first left straight segment and the left curved segment. Figure 6 The middle A section is the first left straight line segment. Figure 6 The middle B section is a left curve segment. Figure 6 The middle C section is the second left straight line segment. Figure 6 The middle E part is a left horizontal segment. Accordingly, a right horizontal segment corresponding to the left horizontal segment is provided between the first right straight segment and the right curved segment. During the stalk pulling process, the left and right horizontal segments can allow the cotton stalks to stay properly during the stalk pulling process, thereby changing the magnitude and duration of the pulling force on the cotton stalks, and reducing the breakage caused by excessive instantaneous pulling force.

[0026] Embodiment 3: This embodiment is another improvement based on embodiment 1, and the difference from embodiment 1 is that: Figure 7 As shown, a left lifting segment is provided between the first left straight segment and the left curved segment, and the inclination angle of the left lifting segment is greater than the inclination angle of the first left straight segment. Figure 7 The middle A section is the first left straight line segment. Figure 7 The middle B section is a left curve segment. Figure 7 The middle C section is the second left straight line segment. Figure 7 The middle D section is the left lifting section. Accordingly, a right lifting section corresponding to the left lifting section is provided between the first right straight section and the right curved section, and the inclination angle of the right lifting section is greater than the inclination angle of the first right straight section. During the stalk pulling process, the left and right lifting sections can increase the amplitude of the cotton stalk's descent when the cotton stalk passes through the left and right curved sections, and the soil around the root of the cotton stalk can be better redistributed, reducing the soil's resistance to the root of the cotton stalk upward, thereby reducing the cotton stalk pulling rate.

[0027] Embodiment 4: This embodiment differs from Embodiments 1-3 in that the inclination angle of the first left straight line segment is smaller than the inclination angle of the second left straight line segment, and correspondingly, the inclination angle of the first right straight line segment is smaller than the inclination angle of the second right straight line segment. At the beginning of extraction, the low-speed mode is used to ensure that the cotton stalks can be firmly clamped. When the cotton stalks are pulled out to a certain height after passing through the curve, the high-speed mode is switched to quickly and completely pull out the cotton stalks, thereby improving the overall extraction efficiency while ensuring the extraction quality.

[0028] Finally, it should be emphasized that the left support frame, left slider, left clamping block and left guide rail described in the present invention are respectively the same in structure and shape as the right support frame, right slider, right clamping block and right guide rail (only the installation direction is different, which is a mirror image relationship), and are used to synchronously complete the clamping and extraction of cotton stalks.

Claims

1. A nonlinear motion clamping cotton stalk pulling device, characterized in that: The machine frame comprises a frame, a left support frame and a right support frame, wherein the left support frame and the right support frame are arranged on the frame, the left support frame is provided with an annular left guide rail, a plurality of left sliders matched with the left guide rail, and a left driving mechanism for driving the left slider to move along the left guide rail, the right support frame is provided with an annular right guide rail, a plurality of right sliders matched with the right guide rail, and a right driving mechanism for driving the right slider to move along the right guide rail, the left guide rail and the right guide rail are parallel and inclined at a preset angle relative to the horizontal plane, the outer sides of the left slider and the right slider are respectively provided with a left clamping block and a right clamping block, and a strip-shaped gap for pulling out cotton stalks is formed between the left and right clamping blocks on opposite sides of the left guide rail and the right guide rail; The left guide rail and the right guide rail on both sides of the strip-shaped gap are called the left working guide rail segment and the right working guide rail segment. The left working guide rail segment is divided into three segments from front to back along the forward direction, namely, a first left straight line segment, a left curved line segment and a second left straight line segment. The first left straight line segment and the second left straight line segment both rise smoothly from front to back, and the left curved line segment first lowers and then rises from front to back. The right working guide rail segment is divided from front to back along the forward direction into a first right straight line segment, a right curved line segment and a second right straight line segment corresponding to the first left straight line segment, the left curved line segment and the second left straight line segment.

2. The nonlinear motion clamping cotton stalk pulling device according to claim 1 is characterized in that: The inclination angle of the first left straight line segment is smaller than the inclination angle of the second left straight line segment, and correspondingly, the inclination angle of the first right straight line segment is smaller than the inclination angle of the second right straight line segment.

3. The nonlinear motion clamping cotton stalk pulling device according to claim 1 or 2, characterized in that: A left horizontal segment is provided between the first left straight segment and the left curved segment, and correspondingly, a right horizontal segment corresponding to the left horizontal segment is provided between the first right straight segment and the right curved segment.

4. The nonlinear motion clamping cotton stalk pulling device according to claim 1 or 2, characterized in that: A left lifting segment is provided between the first left straight segment and the left curved segment, and the inclination angle of the left lifting segment is greater than the inclination angle of the first left straight segment. Correspondingly, a right lifting segment corresponding to the left lifting segment is provided between the first right straight segment and the right curved segment, and the inclination angle of the right lifting segment is greater than the inclination angle of the first right straight segment.

5. The nonlinear motion clamping cotton stalk pulling device according to claim 1 or 2, characterized in that: The opposite sides of the left clamping block and the right clamping block are both provided with anti-slip grooves.

6. The nonlinear motion clamping cotton stalk pulling device according to claim 1 or 2, characterized in that: The frame is provided with a feeding mechanism at the feeding end of the strip-shaped gap.

7. The nonlinear motion clamping cotton stalk pulling device according to claim 1 or 2, characterized in that: The left driving mechanism and the right driving mechanism are chain driving mechanisms or belt driving mechanisms, and the left and right sliders are both provided with vertical through holes, and the chain driving mechanism or belt driving mechanism is provided with guide rods forming a moving pair with the through holes of the left and right sliders.

8. The nonlinear motion clamping cotton stalk pulling device according to claim 1 or 2, characterized in that: The left sliding block is made into one piece with the left clamping block, and the right sliding block is made into one piece with the right clamping block.

9. The non-linear motion clamping cotton stalk pulling device according to claim 8, characterized in that: The left slider is closely attached to the left support frame, and a left positioning pin inserted into the left guide rail is arranged on the left slider; the right slider is closely attached to the right support frame, and a right positioning pin inserted into the right guide rail is arranged on the right slider.

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