Green onion harvesting quantitative laying device

Abstract

This invention relates to agricultural machinery, specifically a quantitative laying device for harvesting scallions. It includes: a rotating shaft rotatably connected to a supporting component; several pairs of fixed blades arranged along the annular outer wall of the rotating shaft; each pair of fixed blades comprising two symmetrically arranged fixed blades; the free ends of the fixed blades rotatably connected to floating blades; and two floating blades connected to the paired fixed blades via a linkage mechanism; a slider located at the end of the rotating shaft facing the supporting component, sliding relative to the rotating shaft; and a slider pushing mechanism located at the opposite surface of the slider and the rotating shaft; and a spring located between the slider and the supporting component. This device enables automatic and quantitative laying of harvested scallions, improving the efficiency of subsequent processes after scallion harvesting.

Description

Technical Field

[0001] This invention relates to agricultural machinery, and in particular to a quantitative laying device for harvesting scallions. Background Technology

[0002] Most current scallion harvesters lack the function of quantitative laying. Some existing harvesters lay the harvested scallions directly on the ground after clamping them with a gripping belt, increasing the damage rate. Other harvesters use a twisting device to first lay the scallions horizontally on a conveyor belt before laying them on the ground, but this still requires manual sorting and bundling, making the operation complex, labor-intensive, and hindering the further development of the scallion industry. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned defects in the prior art and to propose a quantitative laying device for harvesting scallions, which realizes the automatic and quantitative laying of scallions after harvesting, thereby improving the work efficiency of subsequent processes after scallion harvesting.

[0004] The technical solution of the present invention is: a scallion harvesting and quantitative laying device, comprising:

[0005] The rotating shaft is rotatably connected to the support component. Several pairs of fixed blades are provided along the annular outer wall of the rotating shaft. Each pair of fixed blades includes two symmetrically arranged fixed blades. The free end of the fixed blade is rotatably connected to the floating blade. The two floating blades connected to the two fixed blades in the pair are connected by a linkage mechanism.

[0006] A slider is provided at the end of the rotating shaft facing the support component. The slider slides relative to the rotating shaft. A slider pushing mechanism is provided at the opposite surface of the slider and the rotating shaft.

[0007] The spring is located between the slider and the support component.

[0008] In this invention, a connecting shaft is fixed in the middle of the rotating shaft, and the rotating shaft is rotatably connected to the support component through the connecting shaft;

[0009] The slider is mounted on the connecting shaft, and the spring is wound around the outside of the connecting shaft.

[0010] The fixed blades extend axially along the rotating shaft, and several fixed blades are evenly spaced along the annular outer wall of the rotating shaft.

[0011] One end of the fixed blade is fixedly connected to the rotating shaft, and the other end of the fixed blade is rotatably connected to the floating blade.

[0012] The linkage mechanism includes a long link that slides through a through hole in a rotating shaft and reciprocates radially along the rotating shaft. Short links are hinged to both ends of the long link.

[0013] One end of the short connecting rod is hinged to the long connecting rod, the other end of the short connecting rod is fixedly connected to the floating blade, and the short connecting rod is rotatably connected to the free end of the fixed blade.

[0014] One end of the long connecting rod is located above the paired fixed blades on one side, and the other end of the long connecting rod is located below the paired fixed blades on the other side.

[0015] The floating blades and the fixed blades are set at an angle, and the floating blades swing along the hinge point between them and the fixed blades to achieve the contraction and expansion of the floating blades.

[0016] The free end of the fixed blade is provided with a short connecting rod connecting groove in the middle. The short connecting rod is located in the short connecting rod connecting groove and is rotatably connected to the groove wall of the short connecting rod connecting groove.

[0017] The free end of the fixed blade is provided with several floating blade connecting grooves, and the floating blade is rotatably connected to the groove wall of the floating blade connecting groove.

[0018] The slider pushing mechanism includes:

[0019] A push protrusion is provided on the side of the rotating shaft facing the slider, and a push block is provided on the side of the push protrusion facing the rotation direction of the rotating shaft;

[0020] The limiting groove is set on the side of the slider facing the rotating shaft. The pushing protrusion fits against the groove wall of the limiting protrusion. The limiting protrusion has an inclined groove wall that is inclined in the rotation direction of the rotating shaft. The push block contacts the inclined groove wall.

[0021] The side of the rotating shaft is provided with several pushing protrusions, the number of which corresponds to the number of fixed blades;

[0022] The slider has several limiting grooves on its side, and the number of limiting grooves corresponds to the number of pushing protrusions.

[0023] The beneficial effects of this invention are:

[0024] This device can temporarily block the falling scallions using fixed and floating blades. When a certain number of scallions fall onto the fixed blades, the scallions are spread onto the ground by rotating the fixed blades and flipping the floating blades, thus achieving the function of quantitative scallion spreading. In addition, by accurately controlling the parameters of each component in the device and the elasticity of the spring, the number of scallions spread each time can be accurately controlled. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0026] Figure 2 This is a schematic diagram of the main structure of the present invention;

[0027] Figure 3 This is a structural diagram of the fixed blade and linkage mechanism;

[0028] Figure 4 This is a schematic diagram of the contact point between the rotating shaft and the slider in the initial state;

[0029] Figure 5 This is a schematic diagram of the contact point between the rotating shaft and the slider during the initial rotation of the rotating shaft.

[0030] Figure 6 This is a schematic diagram of the structure when the gap between the rotating shaft and the slider is at its maximum.

[0031] Figure 7 This is a schematic diagram of the slider reset process;

[0032] Figure 8 This is a schematic diagram of the structure where the rotating shaft and the slider re-fit together;

[0033] Figure 9 This is a schematic diagram of the device when scallions are laid on the ground.

[0034] In the diagram: 1 Connecting shaft; 2 Spring; 3 Slider; 4 Shaft; 5 Fixed blade; 6 Linkage mechanism; 7 Floating blade; 8 Long connecting rod; 9 First short connecting rod; 10 Second short connecting rod; 11 First floating blade; 12 Second floating blade; 13 Short connecting rod connecting groove; 14 Floating blade connecting groove; 15 First pushing protrusion; 16 First limiting groove; 17 First push block; 18 First inclined groove wall; 19 Second limiting groove; 20 First fixed blade; 21 Second fixed blade. Detailed Implementation

[0035] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] Specific details are set forth in the following description to provide a full understanding of the invention. However, the invention can be practiced in many ways other than those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0037] like Figures 1 to 3As shown, the scallion harvesting and quantitative laying device of the present invention includes a rotating shaft 4, a slider 3, and a spring 2. A connecting rotating shaft 1 is fixed at the center of the rotating shaft 4, and the rotating shaft 4 is rotatably connected to the supporting component through the connecting rotating shaft 1. An annular slider 3 is provided on the side of the rotating shaft 4 facing the supporting component. The slider 3 is sleeved on the annular outer side of the connecting rotating shaft 1, and there is a gap between the annular inner wall of the slider 3 and the annular outer wall of the connecting rotating shaft 1. A slider pushing mechanism is provided on the opposite side of the rotating shaft 4 and the slider 3. The corresponding slider 3 is connected to the supporting component on the side facing the supporting component through the spring 2. Under the combined action of the slider pushing mechanism and the spring 2, the slider 3 can reciprocate along the connecting rotating shaft 1. Several pairs of fixed blades are fixed on the annular outer side of the rotating shaft 4. Each pair of fixed blades includes two fixed blades 5 symmetrically arranged with respect to the axis of the rotating shaft. Each pair of fixed blades is connected to a floating blade 7 through a linkage mechanism 6. The floating blades are unfolded and retracted through the linkage mechanism.

[0038] In this embodiment, two pairs of fixing blades are fixed to the outer annular surface of the rotating shaft 4. Each pair of fixing blades includes two symmetrically arranged fixing blades 5. Therefore, four fixing blades 5 are fixed to the outer annular surface of the rotating shaft 4. The four fixing blades 5 are evenly spaced along the outer annular surface of the rotating shaft, and the included angle between two adjacent fixing blades is 90°. The fixing blades 5 extend along the axial direction of the rotating shaft 4, so the fixing blades 5 have a certain width to ensure that the fixing blades 5 can support the scallions after they fall onto them.

[0039] One end of the fixed blade 5 is fixedly connected to the rotating shaft 4, and the other end of the fixed blade 5 is rotatably connected to the floating blade 7. The two floating blades, which are rotatably connected to the two fixed blades in a pair, are connected by a linkage mechanism.

[0040] The linkage mechanism includes a long connecting rod. A through hole is provided inside the rotating shaft 4, through which the long connecting rod passes. The long connecting rod is slidably disposed within the through hole, so that as the linkage mechanism rotates with the rotating shaft 4, the long connecting rod can also perform radial reciprocating motion within the through hole. Relative to the two paired fixed blades, one end of the long connecting rod is located above one of the fixed blades, and the other end is located below the other fixed blade. Short connecting rods are hinged to both ends of the long connecting rod. One end of the short connecting rod is hinged to the long connecting rod, and the other end of the short connecting rod is fixed to a floating blade 7. The floating blade 7 is set at an angle to the fixed blade 5.

[0041] A short connecting rod connecting groove 13 is provided in the middle of the free end of the fixed blade 5. The short connecting rod is set in the short connecting rod connecting groove 13, and the short connecting rod and the short connecting rod connecting groove 13 are connected by a rotating shaft. Floating blade connecting grooves 14 are provided on both sides of the short connecting rod connecting groove 13. Floating blade connecting shafts are provided in the floating blade connecting grooves 14, and the floating blades 7 are rotatably connected to the fixed blade 5 through the floating blade connecting shafts.

[0042] This embodiment uses a pair of fixed blades as an example to specifically describe the structure of the linkage mechanism and the connection structure between the linkage mechanism and the fixed blades. The pair of fixed blades in this embodiment includes a first fixed blade 20 and a second fixed blade 21, which are symmetrically arranged relative to the axis of rotation. A long connecting rod 8 passes through a through hole in the rotating shaft 4, with one end of the long connecting rod 8 located above the first fixed blade 20 and the other end located below the second fixed blade 21. A first short connecting rod 9 and a second short connecting rod 10 are hinged to both ends of the long connecting rod 8, respectively. The first short connecting rod 9 is fixedly connected to the first floating blade 11, and the second short connecting rod 10 is fixedly connected to the second floating blade 12. The first floating blade 11 is rotatably connected to the first fixed blade 20, and the second floating blade 12 is rotatably connected to the second fixed blade 21.

[0043] During the radial reciprocating movement of the long connecting rod 8, it can drive the first floating blade 11 and the second floating blade 12 at both ends to retract and unfold. As shown in the figure, when the long connecting rod 8 moves radially to the right, one end of it will drive the second floating blade 12 to swing inward along the rotation axis between the second floating blade and the second fixed blade through the second short connecting rod 10. At this time, the angle between the second fixed blade 21 and the second floating blade 12 gradually decreases, and the second floating blade 12 is in a gradually retracted state. At the same time, the other end of the long connecting rod will drive the first floating blade 11 to swing outward through the second short connecting rod 9. At this time, the angle between the first floating blade 11 and the first fixed blade 20 gradually increases, and the first floating blade 11 is in a gradually unfolded state.

[0044] A slider pushing mechanism is provided on the opposite surfaces of the rotating shaft 4 and the slider 3. The slider pushing mechanism includes several pushing protrusions on the side of the rotating shaft 4 and several limiting grooves on the side of the slider 3. The pushing protrusions and limiting grooves are arranged in a corresponding manner, meaning the number of pushing protrusions and limiting grooves is the same. In the initial state, the pushing protrusions are positioned within the limiting grooves, and the outer wall surface of the pushing protrusions is in contact with the inner wall surface of the limiting grooves. At this time, through the cooperation between the pushing protrusions and the limiting grooves, the slider 3 limits the rotation of the rotating shaft 4, keeping the rotating shaft 4 in a stationary state.

[0045] The push protrusion has a push block on its side facing the direction of rotation, and a corresponding inclined groove wall in the limiting groove facing the direction of rotation is provided. In the initial state, the push block is in contact with the inclined groove wall. When the rotating shaft 4 rotates, the push block of the push protrusion generates an inclined pushing force on the inclined groove wall. This pushing force pushes the slider 3 to move away from the rotating shaft 4. At the same time, the spring 2 between the slider 3 and the supporting component is compressed. When the push block disengages from the inclined groove wall, the pushing force acting on the slider 3 disappears. At this time, under the elastic force of the spring 2, the slider 3 automatically returns to its original position, and the limiting groove on the slider 3 and the push protrusion re-fit.

[0046] In this embodiment, since four fixed blades are provided, four pushing protrusions are correspondingly provided on the side wall of the rotating shaft to correspond to the rotation of the four fixed blades. Therefore, four limiting grooves are provided on the side wall of the slider. The following describes the operation process of the slider pushing mechanism by taking the operation process of one pushing protrusion of the rotating shaft as an example.

[0047] In the initial state, the first pushing protrusion 15 on the rotating shaft 4 is located within the first limiting groove 16 of the slider 3, and at this time, the outer wall of the first pushing protrusion 15 is in contact with the groove wall of the first limiting groove 16, and the spring 2 is in its original length state, such as... Figure 4 As shown.

[0048] When the harvested scallions fall onto a fixed leaf, their weight causes the rotating shaft 4 to rotate. During this rotation, the first pusher 17 on the first pushing protrusion exerts a downward pushing force on the first inclined groove wall 18 within the first limiting groove. This force pushes the slider 3 away from the rotating shaft 4, gradually increasing the gap between the slider 3 and the rotating shaft 4. At this time, the spring 2 is compressed. Figure 5 As shown.

[0049] When the first pusher block 17 rotates to contact the bottom of the first inclined groove wall 18, the gap between the slider 3 and the rotating shaft 4 is at its maximum, and the spring 2 is compressed to its shortest state. The spring 2 stores elastic force, such as... Figure 6 As shown.

[0050] As the weight of the scallion on the fixed blade gradually increases, the rotating shaft 4 continues to rotate. The first pushing protrusion 15 rotates to the second limiting groove 19. At the same time, the first protrusion 17 no longer contacts the inclined groove wall of the limiting groove, so the pushing force acting on the slider 3 disappears. Under the elastic force of the spring 2, the slider 3 automatically returns to its original position. Figure 7 As shown.

[0051] As the rotating shaft 4 continues to rotate and the slider 3 automatically resets, when the first pushing protrusion 15 of the rotating shaft rotates to engage with the second limiting groove 19 on the slider 3 again, the entire device returns to its initial state, and the rotating shaft 4 stops rotating. Figure 8 As shown.

[0052] The specific working process of the device is as follows. Initially, under the limiting action of the slider pushing mechanism, the rotating shaft 4 is stationary. As the scallions are harvested, they continuously fall onto a fixed leaf. Under the weight of the scallions, the rotating shaft 4 begins to rotate. During the rotation of the shaft 4, the weight of the scallions counteracts the elastic force of the spring 2, pushing the slider 3 away from the rotating shaft via the slider pushing mechanism. The spring 2 is compressed, generating pressure within it. During this process, the floating leaf 7 acts as a barrier against the scallions on the fixed leaf 6, preventing them from slipping off the end of the fixed leaf.

[0053] As the weight of the scallions on the fixed blade 6 gradually increases, the distance between the slider 3 and the rotating shaft 4 gradually increases. When the weight of the scallions on the fixed blade reaches a certain level, the spring 2 is compressed to its shortest length. The scallions continue to fall onto the fixed blade 6. As the weight of the scallions continues to increase, the rotating shaft 4 continues to rotate. At this point, the thrust acting on the slider 3 and the spring 2 is removed. Under the elastic force of the spring 2, the slider 3 quickly returns to its original position. During this process, the rotating shaft 4 rapidly rotates downwards under the weight of the scallions.

[0054] As the rotating shaft 4 drives the fixed blade to rotate downwards, the fixed blade gradually rotates to a downward tilted state. As the weight of the scallion falling onto the fixed blade gradually increases, the scallion gradually tilts downwards and slides onto the floating blade 7. At this point, under the influence of the scallion's gravity, an outward force is applied to the floating blade 7. This force causes the floating blade to gradually unfold outwards along the rotation axis between it and the fixed blade. Simultaneously, the floating blade on the other side, connected to the fixed blade via a connecting rod, retracts inwards, achieving the purpose of saving space.

[0055] When the rotating shaft 4 rapidly rotates downwards to a certain angle, the slider 3 returns to its original position. At this time, the pushing protrusion on the rotating shaft 4 and the limiting groove on the slider 3 engage again, and the slider 3 limits the rotation of the rotating shaft 4, stopping its rotation. Simultaneously, the floating blade connected to the fixed blade is fully deployed. The fixed blade rotates to a vertical position, and the floating blades all tilt downwards. The scallions on the fixed blade slide down along the fixed and floating blades and are laid on the ground. Figure 9 As shown. By rationally setting the structure of this device, the amount of scallions laid can be accurately controlled, achieving quantitative laying of scallions.

[0056] The above provides a detailed description of the scallion harvesting and quantitative laying device provided by the present invention. Specific examples have been used to illustrate the principles and implementation methods of the invention. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention. The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for quantitatively laying out harvested scallions, characterized in that, include: The rotating shaft is rotatably connected to the support component. Several pairs of fixed blades are provided along the annular outer wall of the rotating shaft. Each pair of fixed blades includes two symmetrically arranged fixed blades. The free end of the fixed blade is rotatably connected to the floating blade. The two floating blades connected to the two fixed blades in the pair are connected by a linkage mechanism. A slider is provided at the end of the rotating shaft facing the support component. The slider slides relative to the rotating shaft. A slider pushing mechanism is provided at the opposite surface of the slider and the rotating shaft. A spring is located between the slider and the support component; The linkage mechanism includes a long link that slides through a through hole in a rotating shaft and reciprocates radially along the rotating shaft. Short links are hinged to both ends of the long link. One end of the short connecting rod is hinged to the long connecting rod, the other end of the short connecting rod is fixedly connected to the floating blade, and the short connecting rod is rotatably connected to the free end of the fixed blade. One end of the long connecting rod is located above the paired fixed blades on one side, and the other end of the long connecting rod is located below the paired fixed blades on the other side. The floating blades and the fixed blades are set at an angle, and the floating blades swing along the hinge point between them and the fixed blades to achieve the contraction and expansion of the floating blades. The slider pushing mechanism includes: A push protrusion is provided on the side of the rotating shaft facing the slider, and a push block is provided on the side of the push protrusion facing the rotation direction of the rotating shaft; The limiting groove is set on the side of the slider facing the rotating shaft. The pushing protrusion fits against the groove wall of the limiting protrusion. The limiting protrusion has an inclined groove wall that is inclined in the rotation direction of the rotating shaft. The push block contacts the inclined groove wall.

2. The scallion harvesting and quantitative laying device according to claim 1, characterized in that, A connecting shaft is fixed in the middle of the rotating shaft, and the rotating shaft is rotatably connected to the support component through the connecting shaft; The slider is mounted on the connecting shaft, and the spring is wound around the outside of the connecting shaft.

3. The scallion harvesting and quantitative laying device according to claim 1, characterized in that, The fixed blades extend axially along the rotating shaft, and several fixed blades are evenly spaced along the annular outer wall of the rotating shaft. One end of the fixed blade is fixedly connected to the rotating shaft, and the other end of the fixed blade is rotatably connected to the floating blade.

4. The scallion harvesting and quantitative laying device according to claim 1, characterized in that, The free end of the fixed blade is provided with a short connecting rod connecting groove in the middle. The short connecting rod is located in the short connecting rod connecting groove and is rotatably connected to the groove wall of the short connecting rod connecting groove. The free end of the fixed blade is provided with several floating blade connecting grooves, and the floating blade is rotatably connected to the groove wall of the floating blade connecting groove.

5. The scallion harvesting and quantitative laying device according to claim 1, characterized in that, The side of the rotating shaft is provided with several pushing protrusions, the number of which corresponds to the number of fixed blades; The slider has several limiting grooves on its side, and the number of limiting grooves corresponds to the number of pushing protrusions.

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