A coupling drag reduction and protection mechanism for soil-moving components

Abstract

This invention discloses a coupling drag reduction and protection mechanism for a soil-shoveling component, relating to the field of agricultural equipment technology. It includes a first support plate, a second support plate, a soil-shoveling component, and a protective component. The protective component is located between the two support plates, and the soil-shoveling component is fixed to the front ends of the first and second support plates. The protective component includes an outer ring plate, an inner plate, and a stacked wheel assembly. The outer ring plate is fixed to either the first or second support plate around its perimeter and has a hollow internal structure. The inner plate is fixedly installed in the center of the outer ring plate, and the two form an annular gap to create a receiving cavity for the chain shaft on the chain to extend through. The cams and concave wheels of the stacked wheel assembly are respectively fixedly fitted onto the chain shaft on the inner side of the chain, with adjacent cams and concave wheels interlocking and filling the annular receiving cavity. This invention can ensure the continuous and stable operation of the chain while performing soil-shoveling work, reducing wear, extending the service life of the equipment, and improving work efficiency.

Description

Technical Field

[0001] This invention belongs to the field of agricultural equipment technology, and specifically relates to a coupling drag reduction and protection mechanism for a soil-shoveling component. Background Technology

[0002] In agricultural operations, it is often necessary to turn over the plants and fruits from the soil. In modern automated agricultural operations, the soil-shoveling parts of agricultural machinery are often used to penetrate deep into the soil and turn over the soil and fruits from the ground. Then, the screening equipment on the agricultural machinery is used to separate the fruits from the soil. The soil on the surface of the fruits is further cleaned by the washing device, and then they are stored in the storage bin of the agricultural machinery. After the storage bin is full, the clean plants and fruits are transported to a fixed storage point for storage.

[0003] The applicant's previous patent application, titled "A Coupling and Drag-Reducing Shovel Mechanism," while reducing the adhesion between the shovel blade surface and the soil and achieving a certain drag-reducing effect, suffers from several drawbacks. Because the conveyor chain must be located on the side wall inside the casing, the chains on both sides are situated in the same working area as plants and soil. Scattered soil enters the gaps between the chain links, creating resistance, increasing transmission difficulty, energy consumption, and even the risk of breakage. Furthermore, the chains are prone to rust and corrosion, requiring frequent replacements and significantly reducing work efficiency. Due to the unique nature of the chain carrying multiple cyclic shafts, existing technologies lack effective protective measures. Therefore, this invention provides a coupling and drag-reducing protective mechanism for shovel components to address these problems. Summary of the Invention

[0004] In view of the defects and problems existing in the prior art, the present invention provides a coupling drag reduction and protection mechanism for soil-moving components.

[0005] The solution adopted by this invention to solve its technical problem is: a coupling drag reduction and protection mechanism for a soil-shoveling component, comprising a first support plate, a second support plate, a soil-shoveling assembly, and a protective assembly. The protective assembly is located between the two support plates and symmetrically arranged on the side of the chain away from the support plates, and is fixed to the first support plate and the second support plate respectively. The soil-shoveling assembly is fixed to the front end of the first support plate and the second support plate. The protective assembly includes an outer ring plate, an inner plate, and a stacked wheel assembly. The outer ring plate is fixed to the first or second support plate on all four sides, and has a hollow internal structure. The insert is fixedly installed in the middle of the outer ring plate, and the two form an annular gap to form a receiving cavity for the chain shaft on the ring chain to extend through. The stacked wheel assembly is located in the receiving cavity. The stacked wheel assembly includes cams and concave wheels. The cams and concave wheels are respectively fixedly fitted on the chain shaft on the inner side of the ring chain, and adjacent cams and concave wheels are interlocked and fill the annular receiving cavity. In the natural state, when the control sprocket works to drive the ring chain to rotate, it can simultaneously drive the chain shaft on the ring chain to rotate, thereby causing each stacked wheel assembly to circulate in the receiving cavity, thus protecting the ring chain.

[0006] Furthermore, one end of the chain shaft is fixed to the left ring chain, and the other end extends to the right and is fixedly connected to the right ring chain, and the evenly distributed chain shafts form an upper and lower layer of screen.

[0007] Furthermore, the outer ring plate has first mounting holes around its perimeter, and an inner support rod is fixedly installed in each first mounting hole. Each inner support rod extends outward and is fixedly connected to the first support plate or the second support plate.

[0008] Furthermore, the inner panel has a plurality of second mounting holes evenly distributed along its extension direction. An inner support rod is provided in the second mounting hole. One end of the inner support rod is fixedly connected to the inner panel, and the other end extends outward to form a first support plate or a second support plate and is fixedly installed thereto, thereby fixing the inner panel to the middle part of the outer ring plate.

[0009] Furthermore, an annular boss extends from the outer center of the cam, and the concave wheel is recessed inward to form a groove. When they are respectively fitted onto the chain shaft, the annular boss on the cam matches the groove on the concave wheel, thus forming an overlapping area between them.

[0010] Furthermore, clearance grooves are respectively opened on the upper and lower inner walls of the outer ring plate and the inner plate, and the distance between the outer end of the clearance groove on the outer ring plate and the outer end of the clearance groove on the inner plate is greater than the outer diameter of the chain shaft, so that the matching of the cam or the concave wheel can pass through, and the upper and lower ends of the stacked wheel assembly are respectively located in the clearance groove.

[0011] Furthermore, the top surface of the shovel is evenly provided with multiple rows of protruding structures, each row of protrusions is composed of protrusions, and the diameter of each row of protrusions gradually decreases from the protrusions on both sides to the protrusion in the middle, while increasing the number of protrusions in the middle area.

[0012] Furthermore, a V-shaped groove is provided on the top surface of the blade above the two adjacent protrusions, the groove extending from the air outlet area of ​​the front row of protrusions on the left and right sides to the center area of ​​the blade side of the rear row of protrusions.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] This invention provides a coupling drag-reducing and protective mechanism for a soil-shoveling component. By designing a stacked wheel assembly that circulates within a receiving cavity, it effectively reduces the direct contact between the chain and the external environment during operation, thereby significantly reducing friction and resistance. This not only improves work efficiency but also extends the service life of the chain. The structural design of the outer ring plate and inner insert plate of this invention provides a robust protective barrier for the chain and its axle, preventing direct contact with soil or other hard objects, thus avoiding potential damage. Due to the design of this mechanism, the front-end soil-shoveling assembly can perform soil-shoveling operations smoothly without being hindered by chain issues. This ensures the continuity and stability of the overall workflow.

[0015] The structural design of the shovel assembly of this invention, compared with the prior art, can greatly reduce the relative sliding friction between the shovel component and the soil through the coupling effect of the non-smooth surface formed by the protrusions and the air film formed by the high-pressure gas, thus achieving a good drag reduction effect. That is, through the coupling effect of multiple rows of protrusions and high-pressure gas, combined with the reasonable arrangement of the protrusions and the flow direction of the high-pressure gas, the resistance of the shovel component during operation is further reduced, thereby improving the working efficiency of the shovel component, reducing energy waste, and reducing environmental pollution during operation. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a top view of the first screen assembly of the present invention.

[0018] Figure 3 This is a schematic diagram of the stacked wheel assembly of the present invention.

[0019] Figure 4 Figure 1 is a front view of the protective assembly of the present invention; Figure 2 is a front view of the assembly of the outer ring plate and the inner insert plate; Figure 3 is a front view of the protective assembly after the ring chain is assembled; Figure 4 is a front view of the stacked wheel assembly after it is assembled into the receiving cavity.

[0020] Figure 5 Figure 4 shows a cross-sectional view of the present invention along line A-A; Figure (a) is a cross-sectional view of the structure without the stacked wheel assembly installed; Figure (b) is a cross-sectional view of the structure after the stacked wheel assembly is assembled.

[0021] Figure 6 is a three-dimensional structural diagram of the shovel assembly of the present invention.

[0022] Figure 7 is an enlarged structural schematic diagram of the arrangement of each row of protrusions in this invention.

[0023] Figure 8 is a front view schematic diagram of the protruding structure of the present invention.

[0024] Figure 9 is a top view of the shovel assembly of the present invention.

[0025] Figure 10 This is a schematic diagram of the structure of the groove on the top surface of the shovel blade of the present invention.

[0026] In the diagram: 1-First support plate, 2-Second support plate, 3-First drive shaft, 4-First pulley, 5-Support rod, 6-Belt, 7-Second pulley, 8-Second drive shaft, 9-Second screen, 10-Fourth drive shaft, 11-First screen, 111-Chain shaft, 112-Upper chain shaft, 113-Lower chain shaft, 12-Protective assembly, 121-Outer ring plate, 122-Outer support rod, 123-Chain chain, 124-Layer wheel assembly, 1241-Concave wheel, 1242-Cam 1243-Overlapping area, 125-First mounting hole, 126-Inner plate, 127-Second mounting hole, 128-Inner support rod, 129-Sprocket, 130-Receiving cavity, 131-Allowing groove, 13-Third drive shaft, 14-Fifth drive shaft, 15-Shovel assembly, 152-Shovel, 153-First air inlet, 154-Second air inlet, 155-Protrusion, 157-First air passage, 158-Second air passage, 159-Air outlet, 160-Groove. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] Please see Figure 1-10 This invention provides a technical solution for a coupling drag reduction and protection mechanism for a soil-shoveling component. The soil-shoveling component is connected to an external agricultural machinery device via a transmission mechanism. The agricultural machinery device controls the soil-shoveling operation, causing the shovel blade on the soil-shoveling component to insert into the soil, shovel up the soil containing crop fruits, and place it on the rear screen. After being screened and separated by multiple layers of screens, the crop fruits are collected into the storage bin, and the soil is then separated and scattered on the ground, thereby completing the harvesting of crops. Example

[0029] This embodiment provides a coupling drag reduction and protection mechanism for a soil-moving component, including a first support plate 1, a second support plate 2, a first screen group, a second screen group, a soil-moving assembly 15, and a protective assembly 12, as follows. Figure 1As shown, the first support plate 1 and the second support plate 2 are fixedly connected by support rods 5, forming a working area between them. A first screen group and a second screen group are respectively provided within the working area. The soil-shoveling assembly 15 is fixedly mounted on the front ends of the two support plates. The first screen group includes a first drive shaft 3, a fourth drive shaft 10, a fifth drive shaft 14, and a first screen 11. The first drive shaft 3 is rotatably connected to the support plates at both ends, and first pulleys 4 are installed at both ends extending beyond the support plates. The first screen 11 is tilted and rotatably mounted on the lower end of the first drive shaft via the fourth and fifth drive shafts. The left end of the fourth drive shaft extends out onto a second support plate and is fitted with a second pulley 7. Belts 6 are driven onto the first and second pulleys.

[0030] Sprockets 129 are fixedly installed on the left and right sides of the fourth and fifth drive shafts, respectively. The sprockets on the same side are connected by a ring chain 123. Chain shafts 111 are evenly spaced on the ring chain, with one end fixed to the left ring chain and the other end extending to the right and fixedly connected to the right ring chain. These evenly distributed chain shafts form two layers of screens. Furthermore, when the first drive shaft 3 is driven to rotate, the fourth drive shaft 10 is driven to rotate via the belt 6, causing the sprockets to rotate and the ring chain to begin circumferential rotation. This, in turn, causes the chain shafts on the ring chain to rotate cyclically, thereby achieving the screening and separation of soil from the surface of crops on the first screen.

[0031] Furthermore, the second screen group is located below and behind the first screen group, including the second drive shaft 8, the third drive shaft 13, and the second screen 9, etc. Its structural connection can be referred to the first screen group mentioned above, and will not be described in detail here. The pulley on the second drive shaft 8 is also connected to the second pulley 7 on the fourth drive shaft by a belt. In this way, when the first screen group is controlled to work, the second screen group can be driven to rotate at the same time through belt drive, thereby realizing the double-layer material distribution operation.

[0032] As shown in Figure 2, protective components 12 are symmetrically provided between the left and right ring chains of the first and second screens to prevent soil scattered in the working area from entering the gaps between the chain links, thereby creating resistance, affecting the operation of the screen, and even causing the risk of breakage. This embodiment takes the protective component set on one side of the first screen as an example. Referring to Figures 2-4, the protective component includes an outer ring plate 121, an inner plate 126, and a stacked wheel assembly 124. In this embodiment, the outer ring plate has a square structure. In actual application, the two ends can also be set to an arc-shaped structure or other shapes as needed. The outer ring plate has first mounting holes 125 on its four sides. An inner support rod 122 is fixedly installed in each first mounting hole. Each inner support rod extends outward and is fixedly connected to the first support plate or the second support plate. The middle part of the outer ring plate has a hollow structure to accommodate the inner plate 126.

[0033] Referring to Figure 4, the inner plate has multiple second mounting holes 127 evenly spaced along its extension direction. An inner support rod 128 is installed within each second mounting hole. One end of the inner support rod is fixedly connected to the inner plate, and the other end extends outward to form a first or second support plate, which is then fixedly installed thereto, thus fixing the inner plate to the center of the outer ring plate. The left and right ends of the inner plate are arc-shaped to avoid the drive shafts mounted on each sprocket. After assembly, the inner plate and the outer ring plate form an annular gap, constituting a receiving cavity 130, through which the chain shafts 111 on the ring chain extend. The position of the receiving cavity is shown by the dotted line in Figure 4(a), and referring to Figure 4(b), the upper and lower chain shafts 111 of the ring chain 123 precisely match and pass through the receiving cavity gap. Referring to Figure 4(c), a stacked wheel assembly 124 is also provided within the receiving cavity 130.

[0034] The stacked wheel assembly 124 includes a cam 1242 and a concave wheel 1241. The cam 1242 and the concave wheel 1241 are respectively fixedly fitted onto the chain shaft 111 of the ring chain within the receiving cavity 130, as shown in Figure 3. An annular boss extends from the outer center of the cam 1242, and the concave wheel is recessed inward to form a groove. When they are respectively fitted onto the chain shaft, the annular boss on the cam matches and is inserted into the groove on the concave wheel, thus forming an overlap area 1243 between them. When each chain shaft is fitted with a cam and a concave wheel, adjacent cams and concave wheels are embedded and overlapped together, thus filling the annular receiving cavity. This can protect and block the ring chain exposed in the receiving cavity. Furthermore, when the ring chain rotates, it can drive the chain shaft fixed on the ring chain to rotate cyclically, thereby driving each stacked wheel assembly fixed on the chain shaft to rotate within the receiving cavity. This can block the ring chains on the left and right sides into the gap between the outer ring plate and the first support plate or the second support plate, thus achieving the protection of the ring chain.

[0035] Furthermore, referring to Figure 5, near the receiving cavity, the upper and lower inner walls of the outer ring plate and the inner plate are respectively provided with clearance grooves 131, thereby forming a clearance structure with a rectangular cross-section. The distance between the outer end of the clearance groove on the outer ring plate and the outer end of the clearance groove on the inner plate is slightly larger than the outer diameter of the chain shaft 111, which is used for the matching of the cam or the concave wheel to pass through, and so that the upper and lower ends of the stacked wheel assembly are respectively located in the clearance groove, further enhancing the protective effect on the chain.

[0036] This invention provides a coupling drag reduction and protection mechanism for a soil-moving component. The protection assembly protects the chain and reduces friction and resistance during operation. In actual use, an external agricultural machinery device first drives the first rotating shaft 3 to rotate via a transmission mechanism. Then, a belt drive drives the sprockets of the first and second screen groups to start working, thereby driving the chain 123 to rotate. Simultaneously, the chain shafts 111 on the chain 123 begin to rotate. Since these chain shafts 111 extend through the receiving cavity 130 in the protection assembly, the stacked wheel group 124 in the protection assembly is also driven. This causes each stacked wheel group to circulate within the receiving cavity 130, effectively reducing direct friction between the chain 123 and the external environment during movement, thus reducing resistance. Meanwhile, due to the structural design of the outer ring plate 121 and the inner plate 126, the chain and its shaft 111 are well protected during rotation, avoiding direct contact with soil or other hard objects and damage; at the same time, through cooperation with the front-end shovel assembly 15, it is ensured that the shovel assembly 15 can perform shovel operation smoothly without being obstructed by the problem of the chain 123.

[0037] Through this design, the entire mechanism can ensure the continuous and stable operation of the chain 123 while performing soil-moving work, reducing wear, extending the service life of the equipment, and improving work efficiency. Example

[0038] Based on Embodiment 1, as shown in Figures 6-10, this embodiment introduces the structure of the soil-shoveling assembly. Through the structural design of the soil-shoveling assembly described in this embodiment, the friction between the soil and the contact surface of the blade can be effectively reduced. At the same time, the drag reduction effect of the non-smooth surface is further enhanced to offset the loss caused by the reduction in air pressure and improve the drag reduction effect.

[0039] Referring to Figures 6 and 7, the shovel assembly includes a blade 152, which is fixedly installed at the front end of the first support plate and the second support plate. The blade has multiple rows of protruding structures evenly distributed on its top surface. The first support plate 1 and the second support plate 2 are respectively provided with a first air inlet 153 and a second air inlet 154. The two support plates are also respectively provided with a first air passage 157, and the first air passage is connected to multiple second air passages 158 provided in the internal cavity of the blade.

[0040] Further, referring to Figure 7, the multiple rows of protrusions on the outer top surface of the blade are all composed of protrusions 155. Two or more rows of protrusions are provided at the end of the first row of protrusions away from the blade. Each protrusion 155 has an air outlet 159. Each air passage in the inner cavity of the blade is correspondingly located below each row of protrusions and is parallel to the extension direction of each row of protrusions. The air outlet on each protrusion is connected to the second air passage at the bottom of each row of protrusions. The opening direction of the air outlet 159 points away from the blade of the blade.

[0041] In this embodiment, the multiple rows of protrusions create a non-smooth surface between the shovel 152 and the soil, which reduces drag. At the same time, the high-pressure gas ejected from the air outlet 159 fills the gaps between the protrusions, forming an air film, which further reduces the friction between the soil and the shovel component 15.

[0042] Furthermore, as shown in Figure 9, the diameter of each row of protrusions gradually decreases from the protrusions 155 on both sides to the middle protrusion 155, while the number of protrusions in the middle area increases. Since high-pressure gas flows in from both sides of each row of protrusions, the pressure of the high-pressure gas will be lost when it reaches the middle position. Therefore, the protrusions are more compact than the sides, thereby enhancing the drag reduction effect of the non-smooth surface to offset the loss caused by the decrease in air pressure and improving the drag reduction effect.

[0043] Furthermore, a V-shaped groove is provided on the top surface of the blade above two adjacent protrusions. That is, the groove extends from the air outlet 159 area of ​​the front row protrusions on the left and right sides to the center area of ​​the blade side of the rear row protrusions. The number of grooves in each group can be set multiple times. In this embodiment, three grooves form a group. With this arrangement, since the opening direction of the air outlet 159 points away from the blade, and each protrusion 155 contains an air outlet 159, the high-pressure gas will form a wave-shaped high and low pressure interval stripe on the protrusion 155 away from the blade, causing uneven air pressure on the surface of the shovel component 15. Therefore, the gas discharged from the front row protrusions is guided by the groove 160, which can destroy the wave-shaped high and low pressure interval stripe and make the air pressure on the surface of the shovel component 15 more uniform. In addition, due to the guidance of the groove 160, the airflow will gather on the blade side of the protrusion 155. Under the action of the curved surface of the protrusion, some airflow will be guided to the area above the protrusion 155, thereby enhancing the drag reduction effect.

[0044] In this embodiment, the design of the shovel assembly significantly reduces the frictional force between the shovel component and the soil through the coupling effect of the non-smooth surface formed by the protrusions and the air film formed by the high-pressure gas. This results in a good drag reduction effect. Specifically, the coupling effect of multiple rows of protrusions and high-pressure gas, combined with the reasonable arrangement of the protrusions and the flow direction of the high-pressure gas, reduces the resistance of the shovel component during operation, improves the operating efficiency of the shovel component, reduces energy waste, and reduces environmental pollution during operation.

[0045] The above description is only a preferred embodiment of the present invention and does not limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A coupling drag reduction and protection mechanism for a soil-moving component, comprising a first support plate (1), a second support plate (2), a soil-moving assembly (15), and a protection assembly (12), wherein the protection assembly is located between the two support plates and symmetrically disposed on the side of the chain (123) away from the support plates, and is fixed to the first support plate and the second support plate respectively; characterized in that: The shoveling assembly is fixed to the front end of the first support plate and the second support plate; the protective assembly includes an outer ring plate (121), an inner plate (126), and a stacked wheel assembly (124). The outer ring plate has first mounting holes (125) around its perimeter. An outer support rod (122) is fixedly installed in each first mounting hole. Each outer support rod extends outward and is fixedly connected to the first support plate or the second support plate. The outer ring plate has a hollow internal structure. The inner plate has multiple second mounting holes (127) evenly distributed along its extension direction. An inner support rod (128) is provided in each second mounting hole. One end of the inner support rod is fixedly connected to the inner plate, and the other end extends outward from the first support plate or the second support plate and is fixedly installed thereto, so that the inner plate is fixed in the middle of the outer ring plate, and the two form an annular gap to form a receiving cavity (130) for the chain shaft (111) on the ring chain. The matching extension passes through; the stacked wheel assembly is located in the receiving cavity, the stacked wheel assembly includes a cam (1242) and a concave wheel (1241), the outer middle of the cam extends into an annular boss, the middle of the concave wheel is recessed inward to form a groove, the cam and the concave wheel are respectively fixedly fitted on the chain shaft on the inner side of the ring chain, the annular boss on the cam is exactly matched and inserted into the groove on the concave wheel, so that an overlapping area (1243) is formed between the two, and adjacent cams and concave wheels are embedded in each other and fill the annular receiving cavity; the upper and lower inner walls of the outer ring plate and the inner plate are respectively provided with clearance grooves (131), and the distance between the outer end of the clearance groove on the outer ring plate and the outer end of the clearance groove on the inner plate is greater than the outer diameter of the chain shaft (111), so that the matching of the cam or the concave wheel can pass through, and the upper and lower ends of the stacked wheel assembly are respectively located in the clearance grooves; the shovel assembly includes a shovel blade (152), the top surface of the shovel blade is evenly provided with multiple rows of protruding structures, each row of protrusions is composed of protrusions (155). The structure consists of a series of protrusions, each row of which gradually decreases in diameter from the protrusions (155) on both sides to the middle protrusion (155), while increasing the number of protrusions in the middle area. The first support plate (1) and the second support plate (2) are respectively provided with air inlets. The first air passage (157) provided inside the support plate is connected to multiple second air passages (158) provided in the internal cavity of the shovel blade. The protrusions (155) are provided with air outlets (159). The opening direction of the air outlets points away from the blade of the shovel blade. The air outlets on each protrusion are connected to the second air passages at the bottom of the corresponding row of protrusions. The high-pressure gas ejected from the air outlets fills the gaps between the protrusions, forming an air film. In its natural state, when the control sprocket (129) drives the ring chain to rotate, it can simultaneously drive the chain shaft on the ring chain to rotate, thereby causing each stacked wheel group to rotate cyclically within the receiving cavity, thus protecting the ring chain.

2. The coupling drag reduction and protection mechanism for a soil-moving component according to claim 1, characterized in that: One end of the chain shaft is fixed to the left ring chain, and the other end extends to the right and is fixedly connected to the right ring chain. The evenly distributed chain shafts form a screen with upper and lower layers.

3. The coupling drag reduction and protection mechanism for a soil-moving component according to claim 1, characterized in that: The top surface of the blade above the two adjacent protrusions is also provided with a V-shaped groove, which points from the air outlet (159) area of ​​the front row protrusions on the left and right sides to the center area of ​​the blade side of the rear row protrusions.

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