A furrow opening device with a function of smoothing a furrow wall

Abstract

The application discloses a ridging ditch device with a ditch wall flattening function, which comprises a plow head, a bottom plate, a connecting support, symmetrically arranged side pressing plates, wing plates and the like. A push rod is pushed to the position of the plow head. After the push rod is moved, the pulley, the supporting block and the movable block are pushed to move to the position of the plow head. In the moving process of the movable block, one end of the extrusion plate is pushed to make the extrusion plate rotate. After the extrusion plate is rotated, the other end of the extrusion plate extrudes the side pressing plate, so that the side pressing plate is unfolded outward, thereby the width of the rear end of the side pressing plate can be adjusted. The ridging ditch can be opened according to the local climate conditions or the required size, different requirements can be met, and the applicability is improved. Through the setting of the triangular blocks, the reaction force can be effectively decomposed, the service life of the inserting rod is prolonged, and after the downward thrust component is transmitted to the soil, the bottom of the ridging ditch can be compacted, thereby the soil stability of the bottom of the ridging ditch is improved, and the obtained ditch wall is complete and smooth.

Description

Technical Field

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

[0002] In the rice-oil rotation system, digging furrows when planting rapeseed is a crucial agricultural practice. Digging furrows can optimize soil moisture management. In the rice-oil 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, avoiding water accumulation on the surface and reducing the risk of soil salinization.

[0003] The requirements for furrow digging in rice-oil rotation need to be closely integrated with local climatic conditions. Specifically, the size, layout and depth of furrows need to be reasonably determined based on factors such as rainfall, drainage requirements and soil moisture, to ensure effective drainage and waterlogging prevention in humid climates, while reducing 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 process of rapeseed, the machine unit is required to open a furrow of reasonable size when operating. The furrow must meet the requirements of flat furrow walls, no soil at the bottom, 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 and its use method for improving crop waterlogging stress. 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 plates, the soil is separated and the furrow is widened, and the shaping wing plates are 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 planting rapeseed in rice stubble fields. The middle furrowing component first uses a front plow to dig furrows and break the soil on the front side to obtain a front furrow, and then uses two groups of furrowing knife groups to cut the soil in the front furrow and throw it onto the carriage 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 dimensions of the middle furrowing component and the ditch cleaning and shaping component are fixed and cannot be adjusted, resulting in the inability to change the dimensions of the furrows opened. If it is necessary to open a furrow of a 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 the different requirements of the user. However, after the angle adjustment of the expansion plate is completed, when the furrows are opened, the expansion plate will exert an action force on the soil, and at the same time, 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. 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] This invention addresses the problem of the inability to adjust the dimensions of the existing ditching components and ditch cleaning and shaping components. By improving and optimizing the existing ditching component structure, the width adjustment plate and adjustment latch are subjected to significant reaction force during the machine's forward ditching process. By providing support blocks and triangular blocks, downward and outward squeezing forces are generated, further ensuring that the ditch walls are intact and smooth, the bottom is flat, and drainage is facilitated, preventing waterlogging. The ditch walls are also strong, reducing the probability of collapse in rainy weather and reducing the cost of manual cleaning later. The rational design of the push rod and plug rod connection structure solves the problem of adjustment components being easily dropped or lost.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A furrowing device with a furrow wall leveling function includes 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 surfaces are designed according to the horizontal straight line method, and the curve equation of the guide curve is:

[0009]

[0010] Take the part of y≥20 in the curve equation as the fitting curve segment;

[0011] The x in the curve equation is the vertical direction of the plowshare, i.e., the furrow depth direction; the intersection point where y=20 and x<200 in the curve equation is used as the base point, and the fitting curve segment is scaled proportionally according to the designed height of the wedge-shaped plowshare;

[0012] Bottom plate, connected to the lower end of the plowshare;

[0013] The symmetrically arranged side pressure plates are provided on the upper surface of the bottom plate at the rear end of the plowshare, and the side pressure plates include an inwardly bent lower support surface, and the lower support surface is in contact with the upper surface of the bottom plate;

[0014] The wing plate is obliquely connected 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°;

[0015] The connecting bracket is connected to the upper surface of the bottom plate near the middle of the plow head. The specific structure and position can be adjusted according to actual requirements.

[0016] A connecting seat is connected to a position on the upper surface of the base plate away from the plow head;

[0017] The hanging bracket is connected to the upper end of the connecting seat and is used to be fixed in the middle position below the rack;

[0018] 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 the upper surface of the connecting block is connected to symmetrically arranged connecting rods. The outer side of the upper end of the connecting rod is rotatably connected to the extrusion plate, 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;

[0019] A movable block is provided 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;

[0020] The middle part of the movable block away from the plowshare is connected to a support block, a pulley is rotatably connected below the support block, a triangular block is provided 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;

[0021] 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.

[0022] 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 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. The arc-shaped plate fits with the baffle; when the side pressure plate rotates around the positioning axis, it can remain relatively stable with the baffle.

[0023] Preferably, symmetrically arranged sliders are connected to the outer sides of the lower sides of the support blocks, and symmetrically arranged slide rails are connected to positions on the upper surface of the bottom plate corresponding to the sliders, and the sliders are slidably connected in the slide rails.

[0024] 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 provision of the rolling rods can greatly reduce the resistance of the triangular block when it slides.

[0025] Preferably, the push rod is provided with a plurality of evenly arranged positioning grooves, and a symmetrically arranged external connection plate is connected to one side of the connecting seat corresponding to the push rod. A plug rod is provided in the middle of the external connection plate, the plug rod is inserted into the positioning groove, and a knob is connected to one end of the plug rod.

[0026] 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 connecting plate away from the knob, the first thread groove is threadedly engaged with the first thread ring, a second thread groove is provided at a position close to the knob of the insertion rod, a second thread ring is provided at a position corresponding to the second thread groove on the external connecting plate close to the knob, the second thread groove is threadedly engaged with the second thread ring, and at the same time, the first thread groove is threadedly engaged with the second thread ring.

[0027] Preferably, a vertical plate is connected to the upper surface of the bottom plate at a side of the movable block away from the support block, a first spring is connected between the movable block and the vertical plate, a limit rod is connected to the position of the movable block corresponding to the first spring, the limit rod is located in the first spring, and the limit rod is slidably connected in the vertical plate;

[0028] 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.

[0029] 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; the second connecting plate is connected to an inner sleeve on the outer side of the arc spring corresponding to the outer side of the inner sleeve, and the first connecting plate is connected to an outer sleeve on the outer side of the inner sleeve, and the inner sleeve is slidably connected in the outer sleeve, and when the side pressure plate rotates under the action of the extrusion plate, it drives the outer sleeve to slide relative to the inner sleeve; when the extrusion plate does not apply force to the side pressure plate, the side pressure plate is restored to its original position under the action of the arc spring.

[0030] Preferably, the arc line of the arc spring is set 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 set with the positioning axis as the center.

[0031] Beneficial effects of the present invention:

[0032] When the width of the rear end 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 of the side pressure plate. The furrows can be opened according to local climatic conditions or 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 is added.

[0033] The present invention generates a reaction force on the soil when the side pressure plates are opened, 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 applied to the triangular blocks 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, which can ensure the service life of the insertion rod, and after the downward thrust component is transmitted to the soil, the bottom of the ditch can be compacted, thereby improving the soil stability at the bottom of the ditch, so that the obtained ditch shape is complete and smooth, the ditch wall is solid, the ditch bottom is flat and easy to drain, and waterlogging is prevented.

[0034] When the plug rod is installed in the external connecting plate, the first thread groove cooperates with the first thread ring or the first thread groove cooperates with the second thread ring, 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 further rotated to make the first thread groove disengage from the first thread ring or the second thread ring. 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 the other external connecting plate, the first thread groove will engage with the second thread ring or the first thread ring. 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 continued to be rotated to thread the first thread groove and the second thread circle or the first thread circle, and the second thread groove is threadedly connected to the first thread circle or the second thread circle. 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 rod can be effectively prevented from being lost, and it can be used according to people with different usage habits.

[0035] 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

[0036] The present invention will be further described below with reference to the accompanying drawings.

[0037] Figure 1 It is a perspective view of the present invention;

[0038] Figure 2 It is a perspective view of the other side of the present invention;

[0039] Figure 3 It is a top view of the present invention;

[0040] Figure 4 It is a three-dimensional diagram of the extrusion plate in the present invention;

[0041] Figure 5 It is a cross-sectional view of the movable block in the present invention;

[0042] Figure 6 It is a cross-sectional view of the inner sleeve in the present invention;

[0043] Figure 7 It is an exploded view of the push rod in the present invention;

[0044] Figure 8 It is a three-dimensional diagram of the rolling rod in the present invention.

[0045] In the figure: 1, plowshare; 2, positioning shaft; 3, connecting block; 4, vertical plate; 5, first connecting plate;

[0046] 11. Bottom plate; 12. Side pressure plate; 13. Wing plate; 14. Connecting bracket; 15. Connecting seat; 16. Suspension bracket;

[0047] 21. curved plate; 22. baffle;

[0048] 31. Connecting rod; 32. Extrusion plate; 33. Positioning block; 34. Movable block; 341. Movable groove; 342. Rounded corner; 35. Support block; 351. Slider; 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 turn; 395. Second thread groove; 396. Second thread turn;

[0049] 41. First spring; 42. Limit rod;

[0050] 51. Second connecting plate; 52. Arc spring; 53. Inner sleeve; 54. Outer sleeve. DETAILED DESCRIPTION

[0051] 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 embodiments described 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 making any creative efforts shall fall within the scope of protection of the present invention.

[0052] See also Figure 1 - Figure 8 As shown, a furrowing device with furrow wall leveling function includes a plowshare 1 for determining the furrow opening position and crushing and loosening the soil.

[0053] The plowshare 1 is curved, and this arrangement allows the plowshare 1 to better concentrate force on the soil, increase soil-breaking capability, reduce resistance generated when digging furrows, and make furrow digging smoother, thereby improving furrow digging efficiency.

[0054] The lower end of the plowshare 1 is connected to a bottom plate 11 , which acts on the soil when being dragged to form a flat ditch bottom and protect and support other components.

[0055] A symmetrically arranged side pressure plate 12 is provided at the rear end of the plowshare 1 corresponding to the upper surface of the base plate 11. The lower surface of the side pressure plate 12 is in contact with the upper surface of the base 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.

[0056] 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, making it easier to obtain a ditch of appropriate size, and can also reduce soil backflow, ensuring the stability and integrity of the ditch type.

[0057] A wing plate 13 is obliquely connected to the upper end of the side pressure plate 12 away from the plowshare 1, which is used to level the soil. During the furrowing process, the wing plate 13 cooperates with the side pressure plate 12 to accurately pile the cut soil on both sides of the furrow, and through appropriate 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 roots of crops, thereby optimizing the soil environment and promoting the healthy growth of crops.

[0058] 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. The upper end of the connecting seat 15 is connected to a hanging bracket 16. The function of the connecting bracket 14 and the hanging bracket 16 is to connect agricultural machinery.

[0059] 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.

[0060] 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 rotational position of the side pressure plate 12 .

[0061] The side pressure plate 12 is connected to an arc-shaped plate 21 at one end close to the plowshare 1. The arc-shaped plate 21 is opened with the positioning shaft 2 as the center of the circle. The position of the plowshare 1 corresponding to the arc-shaped plate 21 is connected with a symmetrically arranged baffle 22. The baffle 22 is provided with an arc-shaped groove with the positioning shaft 2 as the center of the circle. The arc-shaped plate 21 fits with the baffle 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-shaped plate 21 and the baffle 22 is to ensure that there will be no gap at the front end of the side pressure plate 12 during the rotation of the side pressure plate 12, so as to prevent soil from entering the device and affecting the use of the device.

[0062] A connecting block 3 is connected to the middle of the upper surface of the bottom plate 11 for connecting and supporting the connecting rod 31 .

[0063] The upper surface of the connecting block 3 is connected to a symmetrically arranged connecting rod 31, and the outer side of the upper end of the connecting rod 31 is rotatably connected to 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 expand outward, thereby adjusting the width of the furrow.

[0064] The outer side of the connecting rod 31 is connected to 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.

[0065] 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 the extrusion plate 32, so that the extrusion plate 32 can squeeze the side pressure plate 12, so that the side pressure plate 12 can be expanded outward.

[0066] A rounded corner 342 is formed 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 , thereby protecting the extrusion plate 32 .

[0067] The middle part of the movable block 34 away from the plowshare 1 is connected to a supporting block 35 , and a pulley 36 is rotatably connected below the supporting block 35 . The function of the pulley 36 is to facilitate the triangular block 37 to push the movable block 34 .

[0068] 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 between 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.

[0069] 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 transmit the reaction force exerted by the soil to the bottom plate 11, which is then transmitted back to the soil by the bottom plate 11, thereby preventing the device from being subjected to excessive reaction force and further compacting the bottom of the ditch.

[0070] A plurality of rolling rods 371 are rotatably connected to the lower portion 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.

[0071] A push rod 38 is connected to the middle of the 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 .

[0072] 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, it will push the pulley 36, the support block 35 and the movable block 34 to move toward the position of the plowshare 1. During the movement, the movable block 34 will push 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 will squeeze 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 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.

[0073] The push rod 38 is provided with a plurality of evenly arranged positioning grooves 381 , which are used to position the push rod 38 . The provision of a plurality of positioning grooves 381 enables the push rod 38 to be positioned at different positions.

[0074] A scale 382 is provided on the outer side of the push rod 38 at a position corresponding to the positioning groove 381 . The function of the scale 382 is to determine the position of the push rod 38 and the degree of expansion of the side pressure plate 12 .

[0075] 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.

[0076] The soil exerts a reaction force on the side pressure plate 12, which is then transmitted to the extrusion plate 32 through the side pressure plate 12. The extrusion plate 32 transmits the reaction force to the movable block 34, which is then transmitted 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 applied to the triangular block 37 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. After the downward thrust component is transmitted to the soil, the bottom of the ditch can be compacted, thereby improving the soil stability at the bottom of the ditch and preventing soil particles from being washed away by water.

[0077] One end of the insertion rod 391 is connected to a knob 392 for rotating the insertion rod 391 .

[0078] A first thread groove 393 is provided at the 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 is threadedly engaged with the first thread ring 394. 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 is threadedly engaged with the second thread ring 396, and the first thread groove 393 is threadedly engaged with the second thread ring 396.

[0079] The first thread groove 393 is engaged with the second thread ring 394 or the second thread ring 396, and the push rod 38 is pushed to the position where it is used. The first thread groove 393 is disengaged from the first thread ring 394 or the second thread ring 396. After disengagement, the push rod 391 can slide freely in one of the external plates 39. The push rod 38 can be positioned by inserting the first thread groove 393 into the positioning groove 381 of the push rod 38. When the push rod 38 is moved to the position of another external plate 39, the first thread groove 393 is 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 ring 394 or the second thread ring 396, and continue to rotate the insertion rod 391 to make the first thread groove 393 threadedly connected with the second thread ring 396 or the first thread ring 394, and make the second thread groove 395 threadedly connected with the first thread ring 394 or the second thread ring 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 digging furrows. In addition, with the cooperation of the first thread groove 393, the second thread groove 395, the first thread ring 394 and the second thread ring 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.

[0080] 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 ring 396 or the first thread ring 394, and move the second thread groove 395 out of the first thread ring 394 or the second thread ring 396. After moving out, the insert rod 391 can slide freely, move the insert rod 391 out of the positioning groove 381 of the push rod 38, and thread the first thread groove 393 into the first thread ring 394 or the second thread ring 396, which can facilitate the movement of the push rod 38 and prevent the insert rod 391 from affecting the movement of the push rod 38.

[0081] The upper surface of the bottom plate 11 is connected to the vertical plate 4 on the side of the movable block 34 away from the support block 35 . A first spring 41 is connected between the movable block 34 and the vertical plate 4 . The first spring 41 is used to reset the movable block 34 .

[0082] 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 inside the first spring 41 and is slidably connected inside 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 .

[0083] A symmetrically arranged first connecting plate 5 is connected to the position of the upper surface of the bottom plate 11 near the triangular block 37, and a second connecting plate 51 is connected to the position of the side pressure plate 12 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.

[0084] 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 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.

[0085] The second connecting plate 51 is connected to the outer side of the arc spring 52 with an inner sleeve 53, and the first connecting plate 5 is connected to the outer side of the inner sleeve 53 with an outer sleeve 54. The inner sleeve 53 is slidably connected in the outer sleeve 54. 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 improving the service life of the arc spring 52.

[0086] The inner sleeve 53 and the outer sleeve 54 are both arc-shaped, and the arc lines of the inner sleeve 53 and the outer sleeve 54 are set with the positioning shaft 2 as the center. Through this setting, the side pressure plate 12 can be ensured to rotate normally.

[0087] 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 dug are complete and smooth, with solid furrow walls and a flat furrow bottom for easy drainage, preventing waterlogging and meeting operational requirements. The plow body curve 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 the furrow depth stability coefficient are far above 80%, which is better than the national industry standard for field furrowing machinery operation quality.

[0088] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0089] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the 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) consisting 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 on the upper surface of the bottom plate (11) at the rear end of the plowshare (1), and the side pressure plate (12) includes an inwardly bent lower support surface, and the lower support surface is in contact with the upper surface of the bottom plate (11); A wing plate (13) is connected to the upper end of the side pressure plate (12) away from the plowshare (1) in an outwardly inclined manner; A connecting bracket (14) is connected to the upper surface of the base plate (11) near the middle of the plowshare (1); A connecting seat (15) is connected to a position of the upper surface of the base plate (11) away from the plowshare (1); A suspension bracket (16) connected to the upper end of the connecting seat (15); It is characterized by: 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); 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); The middle part of the movable block (34) away from the plowshare (1) is connected to a support block (35), 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), and the lower part of the pulley (36) is in contact with the 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 furrowing 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) is opened with the positioning shaft (2) as the center of the circle. The plowshare (1) is connected to a symmetrically arranged baffle (22) at a position corresponding to the arc plate (21). The baffle (22) is provided with an arc groove with the positioning shaft (2) as the center of the circle. The arc plate (21) is fitted with the baffle (22).

3. A furrowing device with furrow wall leveling function according to claim 2, characterized in that: The outer side of the lower portion 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 in the sliding rail plate (352).

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

5. A furrowing 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), and a symmetrically arranged external connection 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 connection plate (39), and the insertion rod (391) is inserted into the positioning groove (381). One end of the insertion rod (391) is connected to a knob (392).

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

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

10. A furrowing device with furrow wall leveling function according to claim 9, characterized in that: The arc line of the arc spring (52) is set 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 set with the positioning shaft (2) as the center.

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