Ridging and furrowing device with furrow wall leveling function

Abstract

The invention discloses a furrow furrow forming device with a furrow wall flattening function, which comprises a plowshare, a bottom plate, a connecting bracket, symmetrically arranged side pressing plates, wing plates and the like, a push rod is pushed to the plowshare, after the push rod moves, a pulley, a support block and a movable block are pushed to move to the plowshare, and the movable block pushes one end of an extrusion plate in the moving process, so that the furrow furrow forming device can flatten the furrow wall. One end of the extrusion plate is rotated to enable the extrusion plate to rotate, and after the extrusion plate rotates, the other end of the extrusion plate extrudes the side pressing plate to enable the side pressing plate to be unfolded outwards, so that the width of the rear end part of the side pressing plate can be adjusted, furrows can be formed according to local climate conditions or required sizes, different requirements can be met, and the applicability is improved; by arranging the triangular blocks, counter-acting force can be effectively decomposed, the service life of the inserting rods is prolonged, and after downward thrust components are transmitted to soil, the bottoms of the furrows can be tightly pressed, so that the soil stability of the bottoms of the furrows is improved, and the obtained furrow walls are complete and smooth.

Description

Technical Field

[0001] The invention belongs to the technical field of furrow opening devices, and in particular relates to a furrow opening device with a furrow wall leveling function. Background Art

[0002] In the rice-rape rotation system, digging furrows when planting rapeseed is a crucial agricultural practice. Digging furrows can optimize soil moisture management. In the rice-rape rotation system, the soil becomes compacted due to long-term flooding during rice planting, affecting air permeability and drainage. After digging furrows, excess water can be quickly discharged through the furrows to avoid water accumulation on the surface, thereby reducing the risk of soil salinization.

[0003] The requirements for digging furrows in rice-oil rotation need to be closely combined with local climatic conditions. Specifically, the size, layout and depth of the furrows need to be reasonably determined based on factors such as rainfall, drainage requirements and soil moisture, so as to ensure effective drainage and waterlogging prevention in humid climates, and reduce soil moisture evaporation in dry climates, thereby creating a soil environment suitable for rapeseed growth and ensuring the smooth progress of the rice-oil rotation system. During the sowing stage of rapeseed, the machine unit is required to open a furrow of reasonable size. The furrow must meet the requirements of flat furrow walls, no soil at the bottom of the furrow, no congestion, and easy drainage. To solve this problem, the inventor team previously applied for patent CN118318519A to disclose a through-type furrow preparation device for improving crop waterlogging stress and its use method. By reasonably setting the plow body surface and guide curve, the resistance of the preparation device during the forward movement is reduced and the work efficiency is improved; by reasonably setting the side pressure plate, the soil is separated and the furrow is widened, and the shaping wing plate is used to squeeze to both sides to reduce soil backflow and obtain a stable furrow shape; but the overall size structure of the preparation device is fixed and cannot be adjusted according to field conditions.

[0004] At the same time, patent CN116034651A discloses a rotary furrowing and soil leveling device suitable for rapeseed planting in rice stubble fields. The middle furrowing component first opens furrows and breaks soil on the front side through a front plow to obtain a front furrow, and then two groups of furrowing knife groups cut the soil in the front furrow and throw it onto the compartment surface on both sides, so that the two groups of furrowing knife groups are exchanged to cut and throw soil, thereby improving the furrowing efficiency. However, the sizes of the middle furrowing component and the ditch cleaning and shaping component are fixed and cannot be adjusted, resulting in that the size of the furrows opened cannot be changed. If it is necessary to open a furrow size determined according to local climatic conditions or to open furrows of different sizes, the furrowing device needs to be replaced, which is more troublesome during operation, and purchasing different furrowing devices will increase additional costs.

[0005] Patent CN106717322A discloses a transverse adjustment arm for the furrowing and ridge-forming width of a seed drill. The number, depth, width and position of the furrowing and ridge-forming can be adjusted and changed arbitrarily according to different requirements of users. However, after the angle adjustment of the expansion plate is completed, when furrowing is carried out, the expansion plate will exert an action force on the soil, and the soil will also exert a reaction force on the expansion plate. The reaction force will be directly transmitted to the width adjustment plate and the adjustment pin, and the reaction force cannot be dispersed, resulting in the width adjustment plate and the adjustment pin being subjected to a larger reaction force. Moreover, when the hardness of the soil is greater, a greater force will be exerted on the soil when furrowing, which will cause the width adjustment plate and the adjustment pin to be subjected to a greater reaction force, and the width adjustment plate and the adjustment pin will be more easily damaged, thereby reducing the service life of the width adjustment plate and the adjustment pin. Summary of the invention

[0006] In view of the problem that the size of the intermediate furrow opening parts and the ditch cleaning and shaping parts in the prior art cannot be adjusted, the present invention improves and optimizes the structure of the existing furrow opening parts. During the process of the machine moving forward to open the furrow, the width adjustment plate and the adjustment latch are subjected to a large reaction force. By setting the support block and the triangular block, downward and outward extrusion force is generated, further ensuring that the furrow wall is complete and smooth, the furrow bottom is flat, easy to drain, and prevent waterlogging; the furrow wall is solid, the probability of furrow wall collapse is reduced in rainy weather, and the cost of manual cleaning in the later stage is reduced. By reasonably setting the push rod and the plug rod connection structure, the problem of easy falling or loss of the adjustment parts is solved.

[0007] The purpose of the present invention can be achieved by the following technical solutions: A furrowing device with a furrow wall leveling function comprises a plowshare composed of two plow body curved surfaces, wherein the intersection of the front ends of the two plow body curved surfaces is a guide curve; the plow body curved surface is designed according to a horizontal straight line method, and the curve equation of the guide curve is:

[0008] Take the part of y≥20 in the curve equation as the fitting curve segment; The x in the curve equation is the vertical direction of the plowshare, i.e., the furrow depth direction; the intersection point when y=20 and x<200 in the curve equation is used as the base point, and the fitting curve segment is proportionally scaled according to the designed height of the wedge-shaped plowshare; Bottom plate, connected to the lower end of the plowshare; A symmetrically arranged side pressure plate is provided on the upper surface of the bottom plate corresponding to the rear end of the plowshare, and the side pressure plate comprises a lower support surface bent inwardly, and the lower support surface is in contact with the upper surface of the bottom plate; The wing plate is connected obliquely to the upper end of the side pressure plate away from the plowshare, and the angle between the wing plate and the side pressure plate is 5°-20°; The connecting bracket is connected to the upper surface of the bottom plate near the middle of the plowshare. The specific structure and position can be adjusted according to actual requirements. A connecting seat connected to a position on the upper surface of the bottom plate away from the plowshare; A hanging bracket is connected to the upper end of the connecting seat and is used to be fixed at the middle position below the rack; A positioning shaft is connected to the position of the side pressure plate on the upper surface of the bottom plate, and the side pressure plate is connected to the positioning shaft through a bearing. A connecting block is connected to the middle of the upper surface of the bottom plate, and a symmetrically arranged connecting rod is connected to the upper surface of the connecting block. An extrusion plate is rotatably connected to the outer side of the upper end of the connecting rod, and the side end surface of the extrusion plate is an arc surface, and one end of the extrusion plate is in contact with the side pressure plate; A movable block is arranged on the side of the extrusion plate away from the side pressure plate, and a movable groove is opened in the middle of the movable block. The side of the extrusion plate away from the side pressure plate is located in the movable groove. When the movable block moves along the forward direction of the machine, the position of the extrusion plate in the movable groove changes, so that the outer end surface of the extrusion plate moves relative to the inner wall of the side pressure plate, and cooperates with the positioning shaft to realize the adjustment of the angle of the side pressure plate. A support block is connected to the middle of the side of the movable block away from the plowshare, a pulley is rotatably connected below the support block, a triangular block is arranged below the pulley away from the movable block, and the lower part of the pulley is in contact with the inclined surface of the triangular block; A push rod is connected to the middle of one side of the triangular block away from the pulley, and the push rod is slidably connected in the connecting seat.

[0009] Preferably, an arc-shaped plate is connected to one end of the side pressure plate close to the plowshare, and the arc-shaped plate is opened with the positioning axis as the center of the circle. A symmetrically arranged baffle plate is connected to the position of the plowshare corresponding to the arc-shaped plate, and an arc-shaped groove with the positioning axis as the center of the circle is opened on the baffle plate, and the arc-shaped plate fits with the baffle plate; when the side pressure plate rotates around the positioning axis, it can remain relatively stable with the baffle plate.

[0010] Preferably, symmetrically arranged sliding blocks are connected to the outer side below the support block, and symmetrically arranged slide rail plates are connected to the positions of the upper surface of the bottom plate corresponding to the sliding blocks, and the sliding blocks are slidably connected in the slide rail plates.

[0011] Preferably, a plurality of rolling rods are rotatably connected to the lower part of the triangular block. Since the triangular block will receive a downward force from the pulley during the forward movement, the resistance of the triangular block when it slides can be greatly reduced by providing the rolling rods.

[0012] Preferably, the push rod is provided with a plurality of evenly arranged positioning grooves, a symmetrically arranged external connection plate is connected to one side of the connecting seat corresponding to the push rod, an insertion rod is provided in the middle of the external connection plate, the insertion rod is inserted into the positioning groove, and a knob is connected to one end of the insertion rod.

[0013] Preferably, a first thread groove is provided at the end of the insertion rod away from the knob, a first thread ring is provided at a position corresponding to the first thread groove on the external plate away from the knob, the first thread groove and the first thread ring are threadedly matched, a second thread groove is provided at a position of the insertion rod close to the knob, a second thread ring is provided at a position corresponding to the second thread groove on the external plate close to the knob, the second thread groove and the second thread ring are threadedly matched, and at the same time, the first thread groove and the second thread ring are threadedly matched.

[0014] Preferably, a side of the upper surface of the bottom plate corresponding to the movable block away from the support block is connected to a vertical plate, a first spring is connected between the movable block and the vertical plate, a position of the movable block corresponding to the first spring is connected to a limiting rod, the limiting rod is located in the first spring, and the limiting rod is slidably connected in the vertical plate; When the movable block moves toward the plowshare, the movable block presses the first spring forward; when the movable block is in a free state, the movable block moves backward under the reaction force of the first spring.

[0015] Preferably, a symmetrically arranged first connecting plate is connected to a position near the triangular block on the upper surface of the bottom plate, a second connecting plate is connected to a position of the side pressure plate corresponding to the first connecting plate, and an arc spring is connected between the first connecting plate and the second connecting plate; an inner sleeve is connected to the outer side of the second connecting plate corresponding to the arc spring, and an outer sleeve is connected to the outer side of the first connecting plate corresponding to the inner sleeve, the inner sleeve is slidably connected in the outer sleeve, and when the side pressure plate rotates under the action of the extrusion plate, the outer sleeve drives the sliding of the relative inner sleeve; when the extrusion plate does not apply force to the side pressure plate, the side pressure plate returns to its original position under the action of the arc spring.

[0016] Preferably, the arc line of the arc spring is arranged with the positioning axis as the center, the inner sleeve and the outer sleeve are both arc-shaped, and the arc line of the inner sleeve and the outer sleeve is arranged with the positioning axis as the center.

[0017] Beneficial effects of the present invention: When the width of the rear end portion of the side pressure plate needs to be adjusted, the present invention pushes the push rod toward the position of the plowshare. After the push rod moves, it pushes the pulley, the support block and the movable block to move toward the position of the plowshare. During the movement, the movable block pushes one end of the extrusion plate to rotate the extrusion plate. After the extrusion plate rotates, the other end of the extrusion plate squeezes the side pressure plate to expand outward, thereby adjusting the width of the rear end portion of the side pressure plate. The furrows can be opened according to local climatic conditions or according to required dimensions, meeting different needs and improving applicability. There is no need to replace the furrow opening device and no additional cost is added.

[0018] When the present invention is used to open furrows, the side pressure plates generate an action force on the soil, and the soil gives the side pressure plates a reaction force, which is transmitted to the extrusion plates through the side pressure plates, and the extrusion plates transmit the reaction force to the movable blocks, which are then transmitted to the triangular blocks through the support blocks and the pulleys. At this time, the reaction force will try to push the triangular blocks. Through force analysis, the reaction force is applied to the triangular blocks, which will give the triangular blocks a backward thrust component and a downward thrust component, so that the reaction force can be divided into two parts, the backward thrust component will be transmitted to the insertion rod, and the downward thrust component will be transmitted to the bottom plate, and finally transmitted to the soil through the bottom plate. The reaction force brought by the soil can be effectively decomposed, the service life of the insertion rod can be guaranteed, and after the downward thrust component is transmitted to the soil, the bottom of the furrow can be compacted, thereby improving the soil stability at the bottom of the furrow, so that the obtained furrow has a complete and smooth furrow shape, a solid furrow wall, a flat furrow bottom, and is easy to drain, thereby preventing waterlogging.

[0019] When the plug rod is installed in the external connecting plate, the first thread groove cooperates with the first thread circle or the first thread groove cooperates with the second thread circle, and the plug rod is rotated to make the plug rod threadedly connected to one of the external connecting plates. After the connection, the push rod is pushed. After the push rod is pushed to the use position, the plug rod is continuously rotated to make the first thread groove disengage from the first thread circle or the second thread circle. After disengagement, the plug rod can slide freely in one of the external connecting plates, and the plug rod is inserted into the positioning groove of the push rod to position the push rod. When the plug rod is moved to the position of another external connecting plate, the first thread groove will be engaged with the second thread circle or the first thread circle. The first thread groove and the second thread groove are in contact with each other, and the second thread groove is in contact with the first thread circle or the second thread circle. The rod is continuously rotated to thread the first thread groove and the second thread circle or the first thread circle, and the second thread groove and the first thread circle or the second thread circle are threadedly connected. After the connection is completed, the rod is fixed, and the push rod can be stably positioned to prevent the rod from falling off due to the vibration of the agricultural machine when the furrow is opened. In addition, with the cooperation of the first thread groove, the second thread groove, the first thread circle and the second thread circle, the loss of the rod can be effectively avoided, and it can be used according to people with different usage habits.

[0020] When the position of the push rod needs to be adjusted, the present invention rotates the insertion rod to move the first thread groove out of the second thread circle or the first thread circle, and the second thread groove out of the first thread circle or the second thread circle. After moving out, the insertion rod can slide freely, move the insertion rod out of the positioning groove of the push rod, and thread the first thread groove into the first thread circle or the second thread circle, which can facilitate the movement of the push rod and prevent the insertion rod from affecting the movement of the push rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1 is a stereogram of the present invention; Figure 2 is a perspective view of the other side of the present invention; Figure 3 It is a top view of the present invention; Figure 4 It is a three-dimensional diagram of the extrusion plate in the present invention; Figure 5 is a cross-sectional view of the movable block in the present invention; Figure 6 is a cross-sectional view of the inner sleeve in the present invention; Figure 7 It is an exploded view of the push rod in the present invention; Figure 8 It is a three-dimensional diagram of the rolling rod in the present invention.

[0023] In the figure: 1, plowshare; 2, positioning shaft; 3, connecting block; 4, vertical plate; 5, first connecting plate; 11. Bottom plate; 12. Side pressure plate; 13. Wing plate; 14. Connecting bracket; 15. Connecting seat; 16. Suspension bracket; 21. curved plate; 22. baffle; 31. Connecting rod; 32. Extrusion plate; 33. Positioning block; 34. Movable block; 341. Movable groove; 342. Round corner; 35. Support block; 351. Sliding block; 352. Slide plate; 36. Pulley; 37. Triangular block; 371. Rolling rod; 38. Push rod; 381. Positioning groove; 382. Scale; 39. External plate; 391. Insertion rod; 392. Knob; 393. First thread groove; 394. First thread circle; 395. Second thread groove; 396. Second thread circle; 41. first spring; 42. limiting rod; 51. Second connecting plate; 52. Arc spring; 53. Inner sleeve; 54. Outer sleeve. DETAILED DESCRIPTION

[0024] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1 - Figure 8 As shown, a furrow opening device with furrow wall leveling function includes a plowshare 1 for determining the furrow opening position and breaking and loosening the soil.

[0026] The plowshare 1 is curved, and this arrangement enables the plowshare 1 to better concentrate force on the soil, increase soil breaking capacity, reduce resistance when digging furrows, and make furrow digging smoother, thereby improving furrow digging efficiency.

[0027] The lower end of the plowshare 1 is connected with a bottom plate 11, which acts on the soil when being dragged to form a flat ditch bottom and protect and support other components.

[0028] A symmetrically arranged side pressure plate 12 is provided at the rear end of the plowshare 1 corresponding to the upper surface of the bottom plate 11, and the lower surface of the side pressure plate 12 is in contact with the upper surface of the bottom plate 11. The side pressure plate 12 is used to control the degree of separation and widening of the soil, thereby determining the width of the furrow.

[0029] The side pressure plate 12 forms an angle of 70°-75° with the horizontal plane. This setting can ensure the cutting depth and stability of the side pressure plate 12 in the soil, so that the soil separation and widening effect is better, thereby making it easier to obtain furrows of appropriate size, and can also reduce soil backflow, thereby ensuring the stability and integrity of the furrow type.

[0030] A wing plate 13 is obliquely connected to the upper end of the side pressure plate 12 away from the plowshare 1 for leveling the soil. During furrowing, the wing plate 13 cooperates with the side pressure plate 12 to accurately deposit the cut soil on both sides of the furrow, and through proper compaction, ensures that the soil surface is flat and the structure is stable, which helps to reduce soil erosion and provide a solid growth foundation for the root system of crops, thereby optimizing the soil environment and promoting the healthy growth of crops.

[0031] A connecting bracket 14 is connected to the upper surface of the base plate 11 near the middle of the plowshare 1, and a connecting seat 15 is connected to the upper surface of the base plate 11 away from the plowshare 1. A hanging bracket 16 is connected to the upper end of the connecting seat 15. The connecting bracket 14 and the hanging bracket 16 are used to connect agricultural machinery.

[0032] The middle part of the plowshare 1, the connecting bracket 14 and the suspension are arranged in a straight line. This arrangement ensures that the force on the entire device is uniform.

[0033] A positioning shaft 2 is connected to a position on the upper surface of the bottom plate 11 corresponding to the side pressure plate 12 . The side pressure plate 12 is connected to the positioning shaft 2 via a bearing. The positioning shaft 2 is used to determine the rotation position of the side pressure plate 12 .

[0034] An arc plate 21 is connected to one end of the side pressure plate 12 close to the plowshare 1. The arc plate 21 is opened with the positioning shaft 2 as the center. A symmetrically arranged baffle plate 22 is connected to the position of the plowshare 1 corresponding to the arc plate 21. The baffle plate 22 is provided with an arc groove with the positioning shaft 2 as the center. The arc plate 21 fits with the baffle plate 22. During the rotation of the side pressure plate 12, the front end of the side pressure plate 12 will be close to the connecting bracket 14. The function of the arc plate 21 and the baffle plate 22 is to ensure that during the rotation of the side pressure plate 12, there will be no gap at the front end of the side pressure plate 12 to prevent soil from entering the device and affecting the use of the device.

[0035] A connecting block 3 is connected to the middle of the upper surface of the bottom plate 11 for connecting and supporting a connecting rod 31 .

[0036] The upper surface of the connecting block 3 is connected with symmetrically arranged connecting rods 31, and the outer side of the upper end of the connecting rod 31 is rotatably connected with an extrusion plate 32, one end of the extrusion plate 32 is in contact with the side pressure plate 12, and the connecting rod 31 is used to determine the rotation position of the extrusion plate 32, and the extrusion plate 32 is used to extrude the side pressure plate 12 so that the side pressure plate 12 can be expanded outward, thereby adjusting the opening width of the furrow.

[0037] The outer side of the connecting rod 31 is connected with symmetrically arranged positioning blocks 33 , and the extrusion plate 32 is located between the positioning blocks 33 . The positioning blocks 33 are used to fix the position of the extrusion plate 32 to prevent the position of the extrusion plate 32 from changing.

[0038] A movable block 34 is provided on the side of the extrusion plate 32 away from the side pressure plate 12, and a movable groove 341 is opened in the middle of the movable block 34. The side of the extrusion plate 32 away from the side pressure plate 12 is located in the movable groove 341. Through the cooperation between the movable block 34 and the movable groove 341, during the movement of the movable block 34, the extrusion plate 32 can be pushed to rotate, so that the extrusion plate 32 can squeeze the side pressure plate 12 and the side pressure plate 12 can be expanded outward.

[0039] A rounded corner 342 is provided at a position of the movable block 34 corresponding to the movable groove 341 . The function of the rounded corner 342 is to increase the contact area between the movable block 34 and the extrusion plate 32 , so as to protect the extrusion plate 32 .

[0040] A support block 35 is connected to the middle of the side of the movable block 34 away from the plowshare 1 , and a pulley 36 is rotatably connected below the support block 35 . The function of the pulley 36 is to facilitate the triangular block 37 to push the movable block 34 .

[0041] A symmetrically arranged slider 351 is connected to the outer side below the support block 35, and a symmetrically arranged slide plate 352 is connected to the position of the slider 351 on the upper surface of the base plate 11. The slider 351 is slidably connected in the slide plate 352. Through the cooperation of the slider 351 and the slide plate 352, the position of the movable block 34 can be limited so that the movable block 34 can only move horizontally, thereby determining the moving direction of the movable block 34.

[0042] A triangular block 37 is provided below the pulley 36, away from the movable block 34. The lower part of the pulley 36 is in contact with the inclined surface of the triangular block 37. The function of the triangular block 37 is to push the movable block 34, and the reaction force exerted by the soil can be transmitted to the bottom plate 11, and then transmitted back to the soil by the bottom plate 11, so as to prevent the device from being subjected to excessive reaction force and further compact the bottom of the ditch.

[0043] A plurality of rolling rods 371 are rotatably connected to the lower part of the triangular block 37 . The function of the rolling rods 371 is to reduce the friction between the triangular block 37 and the bottom plate 11 , so that the triangular block 37 can move more smoothly.

[0044] A push rod 38 is connected to the middle of one side of the triangular block 37 away from the pulley 36 . The push rod 38 is slidably connected in the connecting seat 15 . The push rod 38 is used to assist in pushing the triangular block 37 .

[0045] During specific use, when it is necessary to adjust the width of the rear end of the side pressure plate 12, the push rod 38 is pushed toward the position of the plowshare 1. After the push rod 38 moves, the pulley 36, the support block 35 and the movable block 34 are pushed toward the position of the plowshare 1. During the movement, the movable block 34 pushes one end of the extrusion plate 32 to rotate the extrusion plate 32. After the extrusion plate 32 rotates, the other end of the extrusion plate 32 squeezes the side pressure plate 12 to expand the side pressure plate 12 outward, so that the width of the rear end of the side pressure plate 12 can be adjusted, and the furrows can be opened according to local climatic conditions or according to the required size, which can meet different needs and improve applicability. There is no need to replace the furrow opening device and no additional cost will be added.

[0046] The push rod 38 is provided with a plurality of evenly arranged positioning grooves 381 , which are used to position the push rod 38 , and the plurality of positioning grooves 381 can position the push rod 38 at different positions.

[0047] A scale 382 is provided at a position on the outer side of the push rod 38 corresponding to the positioning groove 381 . The scale 382 is used to determine the moving position of the push rod 38 and the degree of expansion of the side pressure plate 12 .

[0048] A symmetrically arranged external plate 39 is connected to one side of the connecting seat 15 corresponding to the push rod 38. An insertion rod 391 is provided in the middle of the external plate 39. The insertion rod 391 is inserted into the positioning groove 381. The insertion rod 391 cooperates with the positioning groove 381 to position the push rod 38.

[0049] In specific use, when digging furrows, the side pressure plate 12 exerts an action force on the soil, and the soil gives the side pressure plate 12 a reaction force, which is transmitted to the extrusion plate 32 through the side pressure plate 12, and the extrusion plate 32 transmits the reaction force to the movable block 34, and then transmits it to the triangular block 37 through the support block 35 and the pulley 36. At this time, the reaction force will try to push the triangular block 37. Through force analysis, the reaction force is applied to the triangular block 37, which will give the triangular block 37 a backward thrust component and a downward thrust component, so that the reaction force can be divided into two parts. The backward thrust component will be transmitted to the insertion rod 391, and the downward thrust component will be transmitted to the bottom plate 11, and finally transmitted to the soil through the bottom plate 11. The reaction force brought by the soil can be effectively decomposed, which can ensure the service life of the insertion rod 391, and after the downward thrust component is transmitted to the soil, the bottom of the furrow can be compacted, thereby improving the soil stability at the bottom of the furrow and preventing soil particles from being washed away by water.

[0050] One end of the insertion rod 391 is connected to a knob 392 for rotating the insertion rod 391 .

[0051] A first thread groove 393 is provided at one end of the insertion rod 391 away from the knob 392, and a first thread ring 394 is provided at a position of the external plate 39 away from the knob 392 corresponding to the first thread groove 393, and the first thread groove 393 and the first thread ring 394 are threadedly engaged. A second thread groove 395 is provided at a position of the insertion rod 391 close to the knob 392, and a second thread ring 396 is provided at a position of the external plate 39 close to the knob 392 corresponding to the second thread groove 395, and the second thread groove 395 and the second thread ring 396 are threadedly engaged, and the first thread groove 393 and the second thread ring 396 are threadedly engaged.

[0052] In specific use, when the plug rod 391 is installed in the external plate 39, the first thread groove 393 cooperates with the first thread ring 394 or the first thread groove 393 cooperates with the second thread ring 396, and the plug rod 391 is rotated so that the plug rod 391 is threadedly connected to one of the external plates 39. After the connection, the push rod 38 is pushed. After the push rod 38 is pushed to the use position, the plug rod 391 is continued to be rotated so that the first thread groove 393 is disengaged from the first thread ring 394 or the second thread ring 396. After disengagement, the plug rod 391 can slide freely in one of the external plates 39, and the plug rod 391 is inserted into the positioning groove 381 of the push rod 38 to position the push rod 38. When the plug rod 391 is moved to the position of another external plate 39, the first thread groove 393 will be engaged with the second thread ring 396 or the first thread ring 39 4, and the second thread groove 395 will contact the first thread circle 394 or the second thread circle 396, continue to rotate the insertion rod 391, so that the first thread groove 393 is threadedly connected with the second thread circle 396 or the first thread circle 394, and the second thread groove 395 is threadedly connected with the first thread circle 394 or the second thread circle 396. After the connection is completed, the insertion rod 391 is fixed, and the push rod 38 can be stably positioned to prevent the insertion rod 391 from falling off due to the vibration of the agricultural machine when opening the furrow. In addition, with the cooperation of the first thread groove 393, the second thread groove 395, the first thread circle 394 and the second thread circle 396, the insertion rod 391 can be effectively prevented from being lost. At the same time, it can be used by people with different usage habits, and the insertion rod 391 can be selected according to personal habits; When the position of the push rod 38 needs to be adjusted, rotate the insert rod 391 to move the first thread groove 393 out of the second thread circle 396 or the first thread circle 394, and move the second thread groove 395 out of the first thread circle 394 or the second thread circle 396. After moving out, the insert rod 391 can slide freely, and the insert rod 391 is moved out of the positioning groove 381 of the push rod 38, and the first thread groove 393 is threadedly connected to the first thread circle 394 or the second thread circle 396. This can facilitate the movement of the push rod 38 and prevent the insert rod 391 from affecting the movement of the push rod 38.

[0053] A side of the upper surface of the bottom plate 11 corresponding to the movable block 34 away from the support block 35 is connected to the vertical plate 4 , and a first spring 41 is connected between the movable block 34 and the vertical plate 4 , and the first spring 41 is used to reset the movable block 34 .

[0054] The movable block 34 is connected to a limiting rod 42 at a position corresponding to the first spring 41 . The limiting rod 42 is located in the first spring 41 and is slidably connected in the vertical plate 4 . The limiting rod 42 is used to limit the moving position of the movable block 34 and increase the stability of the movable block 34 .

[0055] A symmetrically arranged first connecting plate 5 is connected to the upper surface of the bottom plate 11 near the triangular block 37, and a second connecting plate 51 is connected to the side pressure plate 12 at a position corresponding to the first connecting plate 5. An arc spring 52 is connected between the first connecting plate 5 and the second connecting plate 51, and the arc spring 52 is used to reset the side pressure plate 12.

[0056] The arc line of the arc spring 52 is set with the positioning shaft 2 as the center. This setting method helps the arc spring 52 to maintain a smooth motion trajectory during rotation. Since the arc line of the arc spring 52 matches the center of the positioning shaft 2, the arc spring 52 can evenly distribute stress when subjected to force, avoiding unstable movement caused by stress concentration.

[0057] The second connecting plate 51 is connected to an inner sleeve 53 on the outer side of the arc spring 52, and the first connecting plate 5 is connected to an outer sleeve 54 on the outer side of the inner sleeve 53. The inner sleeve 53 is slidably connected in the outer sleeve 54, and the inner sleeve 53 cooperates with the outer sleeve 54 so that the arc spring 52 can always be in the inner sleeve 53 and the outer sleeve 54, thereby limiting the expansion or contraction of the arc spring 52 in a specific direction, ensuring that the arc spring 52 works in the correct position, thereby increasing the service life of the arc spring 52.

[0058] The inner sleeve 53 and the outer sleeve 54 are both in an arc shape, and the arc lines of the inner sleeve 53 and the outer sleeve 54 are arranged with the positioning shaft 2 as the center. This arrangement can ensure that the side pressure plate 12 rotates normally.

[0059] The furrowing device can meet different furrowing requirements, has a wide range of applications, good device integrity, and is not prone to losing parts. The furrows it opens are complete and smooth, with solid furrow walls and a flat furrow bottom that is easy to drain and prevents waterlogging, meeting operational requirements. The plow body surface and guide curve are reasonably set to reduce resistance during the movement of the unit and improve work efficiency. The furrow width stability coefficient and furrow depth stability coefficient are far above 80%, which is better than the national industry standard for field furrowing machinery operation quality.

[0060] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0061] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A furrowing device with a furrow wall leveling function, comprising a plowshare (1) composed of two plow body curved surfaces; A bottom plate (11) connected to the lower end of the plowshare (1); A symmetrically arranged side pressure plate (12) is provided at the rear end of the plowshare (1) and corresponds to the upper surface of the bottom plate (11), the side pressure plate (12) comprising an inwardly bent lower support surface, the lower support surface being in contact with the upper surface of the bottom plate (11); A wing plate (13) is connected to the upper part of the side pressure plate (12) at an end away from the plowshare (1) and tilted outward; A connecting bracket (14) connected to a position on the upper surface of the bottom plate (11) near the middle of the plowshare (1); A connecting seat (15) connected to a position of the upper surface of the bottom plate (11) away from the plowshare (1); A suspension bracket (16) connected to the upper end of the connecting seat (15); It is characterized in that A symmetrically arranged positioning shaft (2) is provided on the upper surface of the bottom plate (11) near the plowshare (1); the lower supporting surface of the side pressure plate (12) is rotatably connected to the bottom plate (11) via the positioning shaft (2); a connecting block (3) is connected to the middle of the upper surface of the bottom plate (11); connecting rods (31) perpendicular to the bottom plate (11) are symmetrically arranged on both sides of the connecting block (3); the upper end of the connecting rod (31) is rotatably connected to an extrusion plate (32); and the outer end of the extrusion plate (32) is in contact with the inner wall of the side pressure plate (12); A movable block (34) is provided on the side of the extrusion plate (32) away from the side pressure plate (12), a movable groove (341) is provided in the middle of the movable block (34), and the side of the extrusion plate (32) away from the side pressure plate (12) is located in the movable groove (341); A support block (35) is connected to the middle of a side of the movable block (34) away from the plowshare (1); a pulley (36) is rotatably connected below the support block (35); a triangular block (37) is provided below the pulley (36) away from the movable block (34); the lower side of the pulley (36) is in contact with an inclined surface of the triangular block (37); A push rod (38) is connected to the middle of one side of the triangular block (37) away from the pulley (36), and the push rod (38) is slidably connected in the connecting seat (15).

2. A furrow opening device with furrow wall leveling function according to claim 1, characterized in that: The side pressure plate (12) is connected to an arc plate (21) at one end close to the plowshare (1), the arc plate (21) being opened with the positioning shaft (2) as the center of the circle, and a symmetrically arranged baffle plate (22) is connected to the position of the plowshare (1) corresponding to the arc plate (21), the baffle plate (22) being opened with an arc groove with the positioning shaft (2) as the center of the circle, and the arc plate (21) and the baffle plate (22) are in close contact with each other.

3. A furrow opening device with furrow wall leveling function according to claim 2, characterized in that: The outer side of the lower side of the support block (35) is connected to a symmetrically arranged sliding block (351), and the upper surface of the bottom plate (11) is connected to a symmetrically arranged sliding rail plate (352) at a position corresponding to the sliding block (351), and the sliding block (351) is slidably connected inside the sliding rail plate (352).

4. A furrow opening device with furrow wall leveling function according to claim 3, characterized in that: A plurality of rolling rods (371) are rotatably connected at the lower interior of the triangular block (37).

5. A furrow opening device with furrow wall leveling function according to claim 3, characterized in that: The push rod (38) is provided with a plurality of evenly arranged positioning grooves (381); a side of the connecting seat (15) corresponding to the push rod (38) is connected to a symmetrically arranged external connection plate (39); a plug rod (391) is provided in the middle of the external connection plate (39); the plug rod (391) is plugged into the positioning groove (381); and a knob (392) is connected to one end of the plug rod (391).

6. A furrow opening device with furrow wall leveling function according to claim 5, characterized in that: A first thread groove (393) is formed at one end of the insertion rod (391) away from the knob (392); a first thread ring (394) is formed at a position of the external connecting plate (39) away from the knob (392) corresponding to the first thread groove (393); the first thread groove (393) and the first thread ring (394) are threadedly matched; a second thread groove (395) is formed at a position of the insertion rod (391) close to the knob (392); a second thread ring (396) is formed at a position of the external connecting plate (39) close to the knob (392) corresponding to the second thread groove (395); the second thread groove (395) and the second thread ring (396) are threadedly matched; and the first thread groove (393) and the second thread ring (396) are threadedly matched.

7. A furrow opening device with furrow wall leveling function according to claim 6, characterized in that: A side of the upper surface of the bottom plate (11) corresponding to the movable block (34) away from the support block (35) is connected to a vertical plate (4); a first spring (41) is connected between the movable block (34) and the vertical plate (4); a position of the movable block (34) corresponding to the first spring (41) is connected to a limiting rod (42); the limiting rod (42) is located in the first spring (41); and the limiting rod (42) is slidably connected in the vertical plate (4).

8. A furrow opening device with furrow wall leveling function according to claim 7, characterized in that: A symmetrically arranged first connecting plate (5) is connected to a position of the upper surface of the bottom plate (11) close to the triangular block (37); a second connecting plate (51) is connected to a position of the side pressure plate (12) corresponding to the first connecting plate (5); and an arc spring (52) is connected between the first connecting plate (5) and the second connecting plate (51).

9. A furrow opening device with furrow wall leveling function according to claim 8, characterized in that: The second connecting plate (51) is connected to an inner sleeve (53) on the outer side of the arc spring (52), the first connecting plate (5) is connected to an outer sleeve (54) on the outer side of the inner sleeve (53), and the inner sleeve (53) is slidably connected inside the outer sleeve (54).

10. A furrow opening device with furrow wall leveling function according to claim 9, characterized in that: The arc line of the arc spring (52) is arranged with the positioning shaft (2) as the center, the inner sleeve (53) and the outer sleeve (54) are both arc-shaped, and the arc line of the inner sleeve (53) and the outer sleeve (54) is arranged with the positioning shaft (2) as the center.

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