Flange and wheel assembly for widening wheel track of rice transplanter

Abstract

The utility model relates to a flange and a wheel assembly for widening the wheel track of a rice transplanter, the flange is roughly in a cylinder shape and is provided with a wheel contact surface and a hub contact surface which are oppositely arranged, wheel connecting holes and concave parts are distributed along the circumferential direction of the wheel contact surface at equal intervals, and one concave part is arranged between every two adjacent wheel connecting holes. The wheel connecting holes are used for being connected with rice transplanter wheels, and the sunken parts are used for being connected with rice transplanter hubs. The wheel tread widening device is simple in structure, the structural foundation of an existing mass production machine is not changed, and targeted manufacturing and machining can be conducted according to the requirement for wheel tread widening. When the rice transplanter does not need to widen the wheel track or only needs to widen the wheel track on one side, only part or all of the flanges need to be detached, the rice transplanter wheel is directly connected with the rice transplanter hub, and operation is easy and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural planting, and particularly relates to a flange and a wheel assembly for widening the wheelbase of a transplanter. Background Art

[0002] A transplanter is an agricultural machine that implants rice seedlings into paddy fields. When planting, first, several rice seedlings are taken out from the seedbed by mechanical claws and implanted into the soil in the field. In order to keep the angle between the seedbed and the ground at a right angle, the front end of the mechanical claws must adopt an elliptical motion curve when moving. The motion is completed by a planetary mechanism of a rotary or deformed gear, and the forward engine can drive these motion mechanisms at the same time. The transplanter must have anti-slip wheels and a floating design when traveling on the soil. If the seedlings are planted in patches, the rice seedlings are taken out from a specific seedling box and then planted mechanically. However, the row spacing of the mainstream models of transplanters cannot be adjusted. For different soil qualities of farmland in different regions or certain crop varieties, the row spacing needs to be adjusted, and conventional transplanters obviously cannot meet such requirements.

[0003] Grant publication number: CN 219096413 U, application date: January 19, 2023, the utility model name is a wheelbase adjustment mechanism and an agricultural machine. This utility model discloses a wheelbase adjustment mechanism and an agricultural machine. The wheelbase adjustment mechanism includes a frame, traveling wheels, sliding members, and rotating members. Two sliding members are slidably arranged at both ends of the frame along the length direction of the frame. Two rotating members are respectively rotatably arranged on the two sliding members. Two traveling wheels are respectively rotatably connected to the two rotating members. The rotating member can rotate around a direction perpendicular to the axial direction of the traveling wheel. The wheelbase adjustment mechanism and the agricultural machine of this application can realize the adjustment of the wheelbase, so that the wheelbase matches the row spacing of the crops and avoids damage to the crops caused by the traveling wheels.

[0004] In the above-mentioned prior art, the length direction of the frame is the direction of the distance between the two traveling wheels. Since the traveling wheels are connected to the sliding members through the rotating members, the distance between the two traveling wheels is adjusted by adjusting the relative positions of the two sliding members on the frame. Since the two traveling wheels are oppositely arranged and both are in contact with the ground, directly adjusting the distance between the two traveling wheels through the sliding members will have a large resistance, bringing great difficulties to the adjustment.

[0005] Therefore, the wheelbase adjustment mechanism needs to be vertically arranged. In other words, the agricultural machine needs to be tilted so that the rotating member can rotate around the vertical direction, thereby driving the traveling wheel to rotate around the vertical direction and making the two traveling wheels located in the same plane. When adjusting the position of the sliding member, the traveling wheel rolls along the length direction of the frame, thereby reducing the resistance when adjusting the distance between the two traveling wheels.

[0006] In summary, adjusting the distance between the two walking wheels not only requires the machine to be tilted mechanically, but also involves the coordinated use of multiple components, such as distance-adjusting hydraulic cylinders or motors, gears, chutes, positioning rings, and positioning posts, etc. It is time-consuming and laborious, and the operability is poor. Summary of the Invention

[0007] Aiming at the defects of the prior art that the wheelbase adjustment mechanism needs to tilt the machine and requires multiple components to cooperate simultaneously, with poor practicability, the purpose of the present invention is to provide a flange and wheel assembly for widening the wheelbase of a transplanter.

[0008] The technical solution provided by the present invention is as follows:

[0009] A flange for widening the wheelbase of a transplanter, the flange is generally cylindrical, and has a wheel contact surface and a hub contact surface arranged oppositely;

[0010] Wheel connection holes and recesses are equidistantly distributed along the circumference of the wheel contact surface;

[0011] There is a recess between two adjacent wheel connection holes;

[0012] The wheel connection holes are used to connect with the wheels of the transplanter, and the recesses are used to connect with the hubs of the transplanter.

[0013] Further, the recess includes a plane parallel to the end face of the flange, and the plane is provided with hub connection holes;

[0014] One end of the recess has a notch, and the notch is used to insert a fastener into the hub connection hole.

[0015] Further, the vertical distance between the plane and the wheel contact surface is greater than the vertical distance between the plane and the hub contact surface;

[0016] The axial length of the wheel connection hole is not greater than the vertical distance between the plane and the wheel contact surface.

[0017] Further, the recess further includes a curved surface perpendicular to the plane, and the arc radius of the curved surface is less than the radius of the flange.

[0018] Further, the axial length of the recess is 8 / 15 to 3 / 5 of the axial length of the flange.

[0019] Further, the center distance between adjacent wheel connection holes is the same as the center distance between adjacent recesses.

[0020] Further, a center boss is provided in the middle of the wheel contact surface, and the center boss is used to insert into the center opening of the wheel of the transplanter;

[0021] The wheel connection holes and the recesses are arranged around the center boss;

[0022] The central boss is coaxial with the flange.

[0023] Furthermore, a central counterbore is provided on the contact surface of the wheel hub of the transplanter, and the central counterbore is used to limit the raised portion at the center of the wheel hub of the transplanter; the central counterbore is coaxial with the flange.

[0024] Furthermore, the central boss has the same radius as the central counterbore.

[0025] A wheel assembly includes a flange, and also includes a transplanter wheel and a wheel hub of the transplanter;

[0026] The transplanter wheel is provided with a first through hole corresponding to the wheel connection hole;

[0027] The wheel hub of the transplanter is provided with a second through hole corresponding to the hub connection hole;

[0028] The positions of the first through hole and the second through hole correspond to each other.

[0029] Adopting the technical solution provided by the present utility model, compared with the prior art, it has the following beneficial effects:

[0030] The structure of the present utility model is simple. Without changing the structure basis of the current mass-produced machine, it can be manufactured and processed specifically according to the requirement of widening the wheelbase.

[0031] When the transplanter does not need to widen the wheelbase or only needs to widen the wheelbase on one side, only some or all of the flanges need to be removed, and the transplanter wheel can be directly connected to the wheel hub of the transplanter, and the operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the wheel assembly after the flange is installed in an embodiment of the present application;

[0033] Figure 2 It is a schematic diagram of the disassembled structure of the wheel assembly in an embodiment of the present application;

[0034] Figure 3 It is a schematic diagram of the overall structure of the flange in an embodiment of the present application;

[0035] Figure 4 It is a schematic diagram of the overall structure of the flange from a second angle in an embodiment of the present application;

[0036] Figure 5 It is a schematic diagram of the overall structure of the flange from a third angle in an embodiment of the present application.

[0037] Explanation of the reference numerals in the schematic diagram:

[0038] Wheel connection surface 1, wheel connection hole 11, recessed part 12, flat surface 121, hub connection hole 122, curved surface 123, central boss 13;

[0039] Hub connection surface 2, central counterbore 21;

[0040] Transplanter wheel 3, central opening 31, first through hole 32;

[0041] Transplanter hub 4, convex part 41, second through hole 42. Specific implementation manner

[0042] To further understand the content of the present invention, the present invention will be described in detail in combination with the drawings and embodiments.

[0043] The structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limited conditions for the implementation of the present invention. Therefore, they do not have technical essence. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle", etc. cited in this specification are only for the convenience of clear narration and are not used to limit the scope of implementation. The change or adjustment of their relative relationship, without substantial change in the technical content, should also be regarded as the scope that the present invention can be implemented.

[0044] The wheelbase adjustment of the transplanter is to adapt to different field conditions and operation requirements to ensure the quality and efficiency of the transplanting operation.

[0045] The wheelbase adjustment of the transplanter mainly involves the following aspects:

[0046] Adapting to different field conditions: Factors such as the fertility, soil type and humidity of the field will all affect the operation effect of the transplanter. By adjusting the wheelbase, the transplanter can better adapt to these conditions, ensure that the seedlings can be inserted into the soil evenly and stably, and avoid inconsistent transplanting depths or seedling damage caused by different soil conditions.

[0047] Optimizing operation efficiency: According to the specific situation of the field, appropriately adjusting the wheelbase can make the transplanter more stable during operation, reduce shaking and deviation, thereby improving the operation efficiency. The reasonable adjustment of the wheelbase can also reduce the friction and resistance between the machine and the field, reduce energy consumption, and extend the service life of the machine.

[0048] Meet different planting requirements: Different crop varieties and growth cycles have different requirements for the density and depth of transplanting. By adjusting the wheelbase, the transplanting density per mu can be adjusted to meet the planting requirements of different crops, ensuring the normal growth and yield of crops.

[0049] Improve the operation quality: Appropriate wheelbase adjustment can ensure the quality of transplanting operations, including the uprightness, uniformity, and depth of the seedlings. This helps improve the survival rate and growth conditions of crops, ultimately increasing the yield and quality of agricultural products.

[0050] In summary, the wheelbase adjustment of the transplanter is a key step to ensure operation quality, improve operation efficiency, and meet different planting requirements. Through reasonable wheelbase adjustment, each link of the transplanting operation can be optimized, thereby improving the effect and efficiency of agricultural production.

[0051] A flange and wheel assembly for widening the wheelbase of a transplanter according to the present application can widen the wheelbase of the transplanter without changing the existing basic structure of the transplanter, and can ensure the strength of the wheel assembly after widening.

[0052] The technical solution of the present application has a simple structure and can be used on the basis of the general structure of currently mass-produced machines without significant changes. It can be adapted and manufactured according to the widened wheelbase. The wheel and the hub are respectively connected to the flange, thereby shortening the length of the fastening bolt and reducing the shear force of the bolt.

[0053] Embodiment 1

[0054] In this embodiment, a flange for widening the wheelbase of a transplanter according to the present application is generally cylindrical, and the two end faces of the cylinder are respectively a wheel connection surface 1 and a hub connection surface 2. The wheel connection surface 1 is circumferentially and equidistantly provided with wheel connection holes 11 and recessed portions 12.

[0055] As Figure 3 、 Figure 5 shown, a recessed portion 12 is provided between two adjacent wheel connection holes 11, and the center distance between two adjacent wheel connection holes 11 is the same as the center distance between two adjacent recessed portions 12.

[0056] The recessed portion 12 includes a plane 121 parallel to the flange end face, and a hub connection hole 122 is provided on the plane 121. The recessed portion 12 further includes a curved surface 123 perpendicular to the plane 121, and the arc radius of the curved surface 123 is smaller than the flange radius. The curved surface 123 is not closed, and the notch side provides an operation space for facilitating the insertion of the fastener into the hub connection hole 122.

[0057] The flange is connected to the transplanter wheel 3 through the wheel connection hole 11 and at the same time is connected to the transplanter hub 4 through the hub connection hole 122. The purpose of setting the recessed portion 12 is to reduce the length of the fastener when the flange is connected to the transplanter hub 4. The fastener is preferably a bolt and a nut, and the reduction of the bolt length is beneficial to reducing its shear force.

[0058] A central boss 13 is provided in the middle of the wheel contact surface 1, and the wheel connection hole 11 and the recessed portion 12 are arranged around the central boss 13. The central boss 13 is used to insert into the central opening 31 of the transplanter wheel 3, so that the flange and the transplanter wheel 3 are coaxial and avoid forming an eccentric wheel.

[0059] Correspondingly, a central counterbore 21 is provided on the hub contact surface 2. The central counterbore 21 is used to limit the raised portion 41 provided at the center of the transplanter hub 4. The central counterbore 21 and the raised portion 41 are adapted to each other and are both circular.

[0060] The raised portion 41 provided at the center of the transplanter hub 4 is inserted into the central counterbore 21, so that the flange and the transplanter hub 4 are coaxial and avoid forming an eccentric wheel.

[0061] The central boss 13 provided on the wheel contact surface 1 and the central counterbore 21 provided on the hub contact surface 2 also have the function of preliminary positioning, which is convenient for subsequent connection of the transplanter wheel 3, the flange and the transplanter hub 4 in sequence by bolts and nuts. More specifically, the radii of the central boss 13 and the central counterbore 21 are the same.

[0062] The axial length of the recessed portion 12 is 8 / 15 to 3 / 5 of the axial length of the flange. Taking the axial length of the flange as 75 mm as an example, that is, the vertical height of the curved surface 123 is 40 mm to 45 mm. The length of the bolt for fastening the transplanter wheel 3 and the flange is 30 mm, and the axial length of the wheel connection hole 11 is 35 mm, with a surplus of 5 mm. The length of the bolt for fastening the transplanter hub 4 and the flange is not more than 45 mm, and the axial length of the hub connection hole 122 is 35 mm to 25 mm. The hub connection hole 122 penetrates the hub connection surface 2.

[0063] The vertical distance between the plane 121 and the wheel contact surface 1 is greater than the vertical distance between the plane 121 and the hub contact surface 2, and the axial length of the wheel connection hole 11 is not greater than the vertical distance between the plane 121 and the wheel contact surface 1. In other words, the wheel connection hole 11 does not penetrate the hub contact surface 2.

[0064] Through the settings such as the wheel connection hole 11 that does not penetrate the hub contact surface 2 and the recessed portion 12, not only the structural strength of the flange is satisfied, but also the length of the bolt is reduced, avoiding the bolt from breaking due to excessive shear force.

[0065] Embodiment 2

[0066] In this embodiment, a wheel assembly of the present application includes a flange in Embodiment 1, and further includes a transplanter wheel 3 and a transplanter hub 4. As Figure 1 , Figure 2 shown, the transplanter wheel 3 is provided with a first through hole 32 corresponding to the wheel connection hole 11, and the transplanter hub 4 is provided with a second through hole 42 corresponding to the hub connection hole 122. The positions of the first through hole 32 and the second through hole 42 also correspond to each other.

[0067] When it is not necessary to widen the transplanter wheelbase, or only one side of the transplanter wheelbase needs to be widened, some or all of the flanges can be removed, and the protruding portion 41 provided on the transplanter hub 4 can be directly inserted into the central opening 31 of the transplanter wheel 3 for preliminary positioning and ensuring coaxiality of the two. Rotate the transplanter hub 4 to make the second through hole 42 correspond to the first through hole 32, insert bolts to connect the transplanter wheel 3 and the transplanter hub 4.

[0068] More specifically, preferably four first through holes 32 and second through holes 42 are provided. Correspondingly, the wheel connection holes 11 and the hub connection holes 122 are also four.

[0069] The flange of the present application can be made of carbon steel and is detachably connected to the transplanter wheel 3 and the transplanter hub 4, and can be installed or disassembled according to actual needs, greatly improving the operability while reducing costs.

[0070] The above schematically describes the present invention and its embodiments. This description is not restrictive. What is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and design similar structural forms and embodiments to this technical solution without creative efforts without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A flange for widening the wheelbase of a rice transplanter, characterized in that: The flange is substantially cylindrical and has a wheel contact surface (1) and a hub contact surface (2) which are arranged opposite to each other; Wheel connection holes (11) and recessed portions (12) are evenly distributed along the circumference of the wheel contact surface (1); A recessed portion (12) is provided between two adjacent wheel connection holes (11); The wheel connection hole (11) is used to connect to the rice transplanter wheel (3), and the recessed portion (12) is used to connect to the rice transplanter hub (4).

2. A flange for widening the wheelbase of a rice transplanter according to claim 1, characterized in that: The recessed portion (12) comprises a plane (121) parallel to the flange end surface, and the plane (121) is provided with a hub connection hole (122); One end of the recessed portion (12) is provided with a notch, and the notch is used for inserting a fastener into a hub connection hole (122).

3. A flange for widening the wheelbase of a rice transplanter according to claim 2, characterized in that: The vertical distance between the plane (121) and the wheel contact surface (1) is greater than the vertical distance between the plane (121) and the hub contact surface (2); The axial length of the wheel connection hole (11) is no greater than the vertical distance between the plane (121) and the wheel contact surface (1).

4. A flange for widening the wheelbase of a rice transplanter according to claim 2, characterized in that: The recessed portion (12) further comprises a curved surface (123) perpendicular to the plane (121), and the arc radius of the curved surface (123) is smaller than the flange radius.

5. The flange for widening the wheelbase of a rice transplanter according to claim 1, characterized in that: The axial length of the recessed portion (12) is 8 / 15 to 3 / 5 of the axial length of the flange.

6. The flange for widening the wheelbase of a rice transplanter according to claim 1, characterized in that: The center spacing between adjacent wheel connection holes (11) is the same as the center spacing between adjacent recessed portions (12).

7. The flange for widening the wheelbase of a rice transplanter according to claim 1, characterized in that: A central boss (13) is provided in the middle of the wheel contact surface (1), and the central boss (13) is used to be inserted into a central opening (31) of the rice transplanter wheel (3); The wheel connection hole (11) and the recessed portion (12) are arranged around the central boss (13); The central boss (13) is coaxial with the flange.

8. The flange for widening the wheelbase of a rice transplanter according to claim 7, characterized in that: The hub contact surface (2) is provided with a central countersunk hole (21), and the central countersunk hole (21) is used to limit the raised portion (41) at the center of the transplanter hub (4); the central countersunk hole (21) is coaxial with the flange.

9. The flange for widening the wheelbase of a rice transplanter according to claim 8, characterized in that: The central boss (13) and the central counterbore (21) have the same radius.

10. A wheel assembly, comprising the flange according to any one of claims 2 to 9, characterized in that: The wheel assembly comprises a rice transplanter wheel (3) and a rice transplanter hub (4); The rice transplanter wheel (3) is provided with a first through hole (32) corresponding to the wheel connection hole (11); The rice transplanter hub (4) is provided with a second through hole (42) corresponding to the hub connection hole (122); The first through hole (32) and the second through hole (42) are located correspondingly.

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