Rice furrower

Abstract

The utility model belongs to the field of agricultural machinery technology, especially relates to a rice ditcher, including frame, transmission and ditching part, still include the gear wheel, transmission is connected with gear wheel and drives gear wheel rotation, gear wheel includes tire and rim, tire has the tread that contacts with ground, the circumferential direction of tread is provided with the convex unit that interval distribution, forms the mud ditch groove between adjacent convex unit, the groove bottom width of mud ditch groove is greater than the minimum width of convex unit in the circumferential direction of tread. Through the setting of mud ditch groove, the wide, flat mud flow channel is formed, the probability of mud adhesion is reduced, so that the mud mainly relies on gravity and can flow and discharge smoothly, effectively overcome the stubbornness that traditional narrow deep pattern groove is easily " dead " by thick mud, greatly improve the continuous operation ability and the adhesion of gear wheel in the muddy paddy field.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural machinery technology, specifically a rice ditching machine. Background Technology

[0002] Ditching machines are a new type of mechanical equipment widely used in agricultural field operations for digging ditches. During rice planting, ditching machines need to operate in muddy and moist paddy field environments, and the mud-removing performance of their wheels directly affects the machine's passability and operating efficiency. Currently, the tires of existing rice ditching machines typically have various patterns (such as herringbone, zigzag, or block patterns) on their treads. The traction is provided by the contact between the patterned blocks and the ground, and the mud is discharged through the grooves in the pattern. However, this traditional design has significant shortcomings in the viscous paddy field environment: First, traditional tread grooves are usually designed to be narrow and deep, mainly relying on the centrifugal force generated when the tire rotates to throw out the mud. However, in a viscous mud environment, the mud will increase and adhere to the narrow groove as the trenching machine operates, resulting in the "stuck tire" phenomenon. Second, once the groove is filled with mud, its effective volume and depth are completely lost, and the actual contact area between the tire tread and the ground is reduced, which leads to a serious decrease in the tire's grip and traction performance, resulting in problems such as slippage and getting stuck. This not only affects the trenching efficiency but also increases energy consumption and mechanical wear. Therefore, how to reduce mud clogging of trenches by the tires of trenchers during long-term operation is a technical problem that urgently needs to be solved in the existing technology. Utility Model Content

[0003] The purpose of this utility model is to address the problem in the existing technology of how to reduce the clogging of the trench by mud on the tires of the trencher during long-term operation, and to provide a rice trencher.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A rice ditching machine includes a frame, a transmission device, and ditching components. The transmission device is mounted on the frame to provide power to the ditching machine. It also includes a toothed wheel, which is connected to and drives the toothed wheel to rotate. The toothed wheel includes a tire and a rim, the tire being mounted and fixed on the rim, and the tire having a tread that contacts the ground; The tread is provided with spaced protrusions in the circumferential direction, and mud-removing grooves are formed between adjacent protrusions. The bottom of the mud-removing grooves and the tread not covered by the protrusions are located on the same curved surface. The bottom width of the mud-removing grooves is greater than the minimum width of the protrusions in the circumferential direction of the tread.

[0005] Preferably, the raised unit is connected to the bottom of the sludge discharge ditch through a smooth curved transition.

[0006] Preferably, the raised unit extends in the width direction of the tread to form an axial flange, the end of which extends beyond the ground contact contour boundary of the tread.

[0007] Preferably, the axial flanges between adjacent protrusion units extend in opposite directions.

[0008] Preferably, the raised unit is an integrated cross-shaped structure, including a main rib and a secondary rib. The main rib extends along the width direction of the tread, and the secondary rib extends along the circumferential direction of the tread. The main rib and the secondary rib intersect.

[0009] Preferably, the main rib and the secondary rib have the same height.

[0010] Preferably, both the main rib and the secondary rib smoothly transition to the bottom of the sludge discharge ditch.

[0011] Preferably, the protruding unit has a wear-resistant layer on the side facing the ground, which reduces the wear of the protruding unit.

[0012] Preferably, a micro-protrusion structure is provided between the bottom of the sludge discharge trench and the outline boundary of the tire tread, the micro-protrusion structure being used to reduce the adhesion of mud to the sludge discharge trench.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: 1. The mud-draining trench structure of this utility model has a bottom width greater than the minimum width of the raised unit and is located on the same curved surface as the original tread, forming a wide and flat mud flow channel, which significantly reduces the probability of mud adhesion, allowing the mud to flow and be discharged smoothly mainly by gravity. This effectively overcomes the stubborn problem that traditional narrow and deep patterned trenches are easily "stuck" by viscous mud, and greatly improves the continuous operation capability and grip of the toothed wheel in muddy paddy fields.

[0014] 2. The end of the axial flange of this utility model extends beyond the boundary of the tire tread ground contact contour, which can effectively prevent mud from splashing onto the side of the tire and the transmission device. This not only keeps the machine clean and reduces maintenance needs, but also further improves the lateral traction through the staggered and reverse-extending axial flanges, effectively suppressing lateral slippage during operation and enhancing the stability of the whole machine operation.

[0015] 3. The cross-shaped design of this utility model, through the integrated main rib and secondary rib structure, provides excellent axial and circumferential traction performance. The design of the main rib and secondary rib having the same height and smooth transition with the trench ensures uniform distribution of grounding pressure, reduces uneven wear, and further optimizes stress distribution and mud removal effect, thereby achieving a comprehensive improvement in traction force, wear resistance and mud removal efficiency in complex paddy field environments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a rice ditching machine.

[0017] Figure 2 This is a schematic diagram of the lateral structure of a rice ditching machine.

[0018] Figure 3 This is a schematic diagram of the toothed gear.

[0019] The markings in the diagram are: 1-transmission device, 2-toothed wheel, 3-tire, 4-rim, 5-tread, 6-raised unit, 7-axial flange, 8-mud groove, 9-main rib, 10-secondary rib, 11-wear-resistant layer, 12-micro-convex structure. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings.

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0022] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0023] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] In Example 1: The rice ditching machine described in this utility model includes a frame, a transmission device 1, and ditching components. The transmission device 1 is mounted on the frame to provide power to the ditching machine and also includes a toothed wheel 2. The transmission device 1 is connected to the toothed wheel 2 and drives the toothed wheel 2 to rotate. The toothed wheel 2 includes a tire 3 and a rim 4. The tire 3 is mounted and fixed on the rim 4. The tire 3 has a tread 5 that contacts the ground. The tread 5 has spaced-apart raised units 6 arranged in the circumferential direction. A mud-removing groove 8 is formed between adjacent raised units 6. The bottom of the mud-removing groove 8 and the tread 5 not covered by the raised units 6 are located on the same curved surface. The width of the bottom of the mud-removing groove 8 is greater than the minimum width of the raised unit 6 in the circumferential direction of the tread 5.

[0027] In this embodiment, the mud discharge groove 8 is a wide groove, unlike the narrow and deep grooves in the prior art. It is like multiple miniature drainage channels distributed on the tire tread, providing ample space for the mud to flow. The structure of the bottom of the mud discharge groove 8 being flush with the tire tread 5 makes the mud discharge groove 8 almost free of abrupt corners and dead angles, reducing the adhesion of mud. During operation, the mud can flow smoothly to both sides and be discharged naturally under its own gravity along the wide and flat mud discharge groove 8. Its dependence on centrifugal force is greatly reduced, thereby reducing the blockage of the mud discharge groove 7 by viscous mud, ensuring continuous and effective contact between the tire tread 5 and the ground, and maintaining excellent grip and traction performance.

[0028] As a preferred embodiment, based on the above method, the raised unit 6 is further connected to the bottom of the drainage ditch 8 via a smooth curved transition. This structural design effectively reduces stress concentration in the raised unit 6, thereby reducing deformation at the root of the raised unit 6 under complex stress, improving the service life of the tire 3. Simultaneously, the curved connection makes the mud flow path smoother, further reducing mud accumulation and adhesion in the corners of the drainage ditch 8, further increasing the operating time of the tire 3 in muddy fields.

[0029] In Example 2: The rice ditching machine described in this utility model, based on the above method, further includes a raised unit 6 extending in the width direction of the tread 5 to form an axial flange 7, the end of which extends beyond the ground contour boundary of the tread 5.

[0030] The axial flange 7 described in this embodiment can effectively prevent mud from splashing and adhering to the side of the tire 3, further improving the service life of the rim 4 and the transmission device 1, and reducing mud adhesion during actual use.

[0031] As a preferred embodiment, based on the above method, the axial flanges 7 between adjacent protruding units 6 further extend in opposite directions. With this structural arrangement, the staggered structure between the axial flanges 7 reduces the concentration of mud adhering to one side of the tire 3 during prolonged operation, further reducing the impact of mud adhesion on tire slippage, thereby increasing the effective operating time of the tire 3 during extended operation.

[0032] In Example 3: The rice ditching machine described in this utility model, based on the above method, further includes a raised unit 6 as an integrated cross-shaped structure, comprising a main rib 9 and a secondary rib 10. The main rib 9 extends along the width direction of the tread 5, and the secondary rib 10 extends along the circumferential direction of the tread 5. The main rib 9 and the secondary rib 10 intersect.

[0033] In this embodiment, the main rib 9 provides axial traction for the tire 3, and the secondary rib 10 provides support for the part of the tire 3 that contacts the ground. At the same time, the cross-shaped structure further reduces mud adhesion and further improves the traction performance of the tire 3 in muddy fields.

[0034] As a preferred embodiment, based on the above method, the main rib 9 and the secondary rib 10 are further aligned at the same height. This structural arrangement, where the main rib 9 and the secondary rib 10 are at the same height, reduces uneven wear caused by height differences during tire 3 use, further improving the service life of the tire 3 and the raised unit 6.

[0035] As a preferred embodiment, based on the above method, both the main rib 9 and the secondary rib 10 smoothly transition to the bottom of the mud discharge trough 8. This structural arrangement allows for a smooth transition surface that further reduces mud adhesion, thereby increasing the effective operating time of the tire 3.

[0036] As a preferred embodiment, based on the above method, a wear-resistant layer 11 is further provided on the side of the raised unit 6 facing the ground, which reduces the wear of the raised unit 6. This structural arrangement can further improve the service life of the tire 3.

[0037] As a preferred embodiment, based on the above method, a micro-protrusion structure 12 is further provided between the bottom of the mud discharge groove 8 and the outline boundary of the tread 5. The micro-protrusion structure 12 is used to reduce the adhesion of mud to the mud discharge groove 8. With this structural arrangement, the contact area between mud and the mud discharge groove 8 can be effectively reduced, thereby reducing mud adhesion and further improving the effective operating time of the tire 3 during long-term operation.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rice ditching machine, comprising a frame, a transmission device, and ditching components, wherein the transmission device is mounted on the frame to provide power to the ditching machine, characterized in that, It also includes a toothed wheel, the transmission device being connected to the toothed wheel and driving the toothed wheel to rotate; The toothed wheel includes a tire and a rim, the tire being mounted and fixed on the rim, and the tire having a tread that contacts the ground; The tread is provided with spaced protrusions in the circumferential direction, and mud-removing grooves are formed between adjacent protrusions. The bottom of the mud-removing grooves and the tread not covered by the protrusions are located on the same curved surface. The bottom width of the mud-removing grooves is greater than the minimum width of the protrusions in the circumferential direction of the tread.

2. The rice ditching machine according to claim 1, characterized in that, The raised unit is connected to the bottom of the sludge discharge ditch through a smooth curved transition.

3. A rice ditching machine according to claim 2, characterized in that, The raised unit extends in the width direction of the tread to form an axial flange, the end of which extends beyond the ground contact profile boundary of the tread.

4. A rice ditching machine according to claim 3, characterized in that, The axial flanges between adjacent protrusion units extend in opposite directions.

5. A rice ditching machine according to claim 4, characterized in that, The raised unit is an integrated cross-shaped structure, including a main rib and a secondary rib. The main rib extends along the width direction of the tread, and the secondary rib extends along the circumference direction of the tread. The main rib and the secondary rib intersect.

6. A rice ditching machine according to claim 5, characterized in that, The main rib and the secondary rib have the same height.

7. A rice ditching machine according to claim 6, characterized in that, Both the main rib and the secondary rib smoothly transition to the bottom of the sludge discharge ditch.

8. A rice ditching machine according to claim 7, characterized in that, The raised unit has a wear-resistant layer on the side facing the ground, which reduces the wear of the raised unit.

9. A rice ditching machine according to claim 8, characterized in that, A micro-protrusion structure is provided between the bottom of the sludge discharge trench and the outline boundary of the tire tread. The micro-protrusion structure is used to reduce the adhesion of mud to the sludge discharge trench.

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