Four-wheel-drive riding type mini-tiller and frame structure thereof

Abstract

The utility model provides a four-wheel drive riding type mini-tiller and a frame structure thereof, and the frame structure comprises a front frame and a rear frame hinged to the rear part of the front frame; the front rack is of a double-layer support structure and comprises a front upper support, a front lower support and a front gearbox, wherein the front upper support and the front lower support are arranged up and down, and the front gearbox is fixedly connected with the front upper support and the front lower support. The front upper support and the front lower support extend in the direction away from the mini-tiller head. The rear rack is also of a double-layer support structure and comprises a rear upper support, a rear lower support and a rear gearbox, wherein the rear upper support and the rear lower support are arranged up and down, and the rear gearbox is fixedly connected with the rear upper support and the rear lower support. Wherein the rear upper bracket and the rear lower bracket respectively extend towards the front upper bracket and the front lower rack; wherein the front upper support is connected with the rear upper support in a hinged mode, and the front lower support is connected with the rear lower support in a hinged mode. The frame structure is stable, and the running stability of the mini-tiller can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of micro-tillage machines, in particular to a four-wheel drive riding micro-tillage machine and a frame structure thereof. Background Art

[0002] Mini-tillage machines are powered by small diesel or gasoline engines and are characterized by light weight, small size, and simple structure. They are widely used in dry land, paddy fields, and orchards in plains, mountainous areas, and hills. Equipped with appropriate equipment, they can perform operations such as weeding, ditching, and tilling.

[0003] The mainstream micro-tillers on the market today are walk-behind and ride-on models. Walk-behind models require a human to push the tiller, which is labor-intensive and inefficient. Ride-on models, on the other hand, use joysticks and pedals to control the tiller's movement and operation, offering the advantages of low labor intensity and high efficiency.

[0004] The inventors previously disclosed a four-wheeled ride-on micro-tillage machine in Chinese patent CN221728851U. During tilling or traveling, the operator turns the steering wheel on the steering mechanism, thereby driving the rear frame to swing relative to the front frame through the steering assembly, thereby enabling the micro-tillage machine to achieve a folded and turned position. Because the seat is fixedly mounted on the upper rear portion of the rear frame, and the rear gearbox is fixedly connected to the lower rear portion of the rear frame and the rear wheels are mounted via the rear wheel axle, the seat is always supported on the rear wheels via the rear gearbox during steering. That is, the seat is always effectively supported during steering, making the micro-tillage machine more stable when steering and less likely to tip over.

[0005] The aforementioned four-wheeled riding micro-tiller, whose front and rear frames both adopt a single-layer support structure, occasionally suffers from driving instability due to the high center of gravity during actual use. Therefore, how to further improve the driving stability of the micro-tiller has become a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0006] In view of this, the purpose of this utility model is to provide a frame structure of a four-wheel drive riding micro-tillage machine to further improve the driving stability of the micro-tillage machine;

[0007] Another object of the present invention is to provide a micro-tillage machine having the above frame structure.

[0008] In order to achieve the above object, the utility model provides a frame structure of a four-wheel drive riding micro-tillage machine, comprising a front frame and a rear frame hinged to the rear of the front frame;

[0009] The front frame is a double-layer bracket structure, which includes a front upper bracket and a front lower bracket arranged up and down, and a front gearbox fixedly connected to the front upper bracket and the front lower bracket; wherein the front upper bracket and the front lower bracket both extend in a direction away from the head of the micro-tiller;

[0010] The rear frame is also a double-layer bracket structure, which includes a rear upper bracket and a rear lower bracket arranged vertically, and a rear gearbox fixedly connected to the rear upper bracket and the rear lower bracket; wherein the rear upper bracket and the rear lower bracket extend toward the front upper bracket and the front lower bracket respectively;

[0011] The front upper bracket and the rear upper bracket are connected via a hinge, and the front lower bracket and the rear lower bracket are also connected via a hinge.

[0012] Preferably, one of the front upper bracket and the rear upper bracket has an insertion shaft, and the other has a socket for inserting the insertion shaft;

[0013] A first bearing is provided between the insertion shaft and the insertion hole. The first bearing is fixedly embedded in the inner wall of the insertion hole, and the insertion shaft is fixedly inserted into the inner ring of the first bearing.

[0014] Preferably, the insertion shaft is arranged on the front upper bracket, and the insertion hole is arranged on the rear upper bracket.

[0015] Preferably, the front upper bracket is located below the rear upper bracket;

[0016] The insertion shaft is arranged at one end of the front upper bracket close to the rear upper bracket and is arranged vertically upward, and the insertion hole is arranged at one end of the rear upper bracket close to the front upper bracket.

[0017] Preferably, one of the front lower bracket and the rear lower bracket has a through shaft hole, and the other has two support plates overlapped at both ends of the shaft hole, and the two support plates are provided with through holes at positions corresponding to the shaft hole;

[0018] A bolt shaft passes through the two support plates and the shaft hole and is locked by a nut;

[0019] A second bearing is provided between the bolt shaft and the shaft hole. The second bearing is embedded in the inner wall of the shaft hole, and the bolt shaft is inserted into the inner ring of the second bearing.

[0020] Preferably, the number of the second bearings is two, and the two second bearings are arranged on both axial sides of the shaft hole.

[0021] Preferably, the shaft hole is provided on the rear lower bracket, and the two support plates are provided on the front lower bracket.

[0022] In addition, the utility model also provides a four-wheel drive riding type micro-tillage vehicle having any of the frame structures described above.

[0023] The utility model has the following beneficial effects:

[0024] The frame structure of this four-wheel drive riding micro-tiller is such that when the micro-tiller turns, the rear upper bracket can rotate relative to the front upper bracket, and the rear lower bracket can rotate relative to the front lower bracket in response to the drive of the steering gear and steering assembly, thereby achieving the micro-tiller's waist-turning steering. Due to the frame structure adopting a double-layer structure, specifically, the front upper bracket and the rear upper bracket constitute the upper bracket, and the front lower bracket and the rear lower bracket constitute the lower bracket. This double-layer structure provides good stability for the entire frame, significantly improving the driving stability of the micro-tiller.

[0025] The four-wheel drive riding micro-tillage machine provided by the utility model has all the technical effects of the above-mentioned frame structure due to its frame structure, which will not be described in detail herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0027] Figure 1 This is a three-dimensional schematic diagram of the frame structure of the four-wheel drive riding micro-tillage machine according to an embodiment of the present utility model;

[0028] Figure 2 A side view of the frame structure of the four-wheel drive riding micro-tillage machine according to an embodiment of the present utility model;

[0029] Figure 3 This is a schematic structural diagram of the rear upper bracket according to an embodiment of the present utility model;

[0030] Figure 4 This is a schematic structural diagram of the front upper bracket according to an embodiment of the present utility model;

[0031] Figure 5 This is a schematic structural diagram of the rear lower bracket according to an embodiment of the present utility model;

[0032] Figure 6 This is a schematic structural diagram of the front lower bracket according to an embodiment of the present utility model;

[0033] Figure Numbers

[0034] 1-front frame; 11-front upper bracket; 12-front lower bracket;

[0035] 2-rear frame; 21-front upper bracket; 22-front lower bracket;

[0036] 3-Front axle;

[0037] 4-rear axle;

[0038] 5-insertion shaft;

[0039] 6-jack;

[0040] 7a-first bearing; 7b-second bearing;

[0041] 8-axis hole;

[0042] 9- support plate;

[0043] 10-Bolt shaft. DETAILED DESCRIPTION

[0044] The core of the utility model is to provide a frame structure of a four-wheel drive riding micro-tillage machine to further improve the driving stability of the micro-tillage machine;

[0045] Another core of the present invention is to provide a micro-tillage machine with the above-mentioned frame structure.

[0046] The following will be combined with the drawings in 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 creative efforts are within the scope of protection of the present invention.

[0047] like Figure 1 As shown, the embodiment of the present invention discloses a frame structure of a four-wheel drive riding micro-tillage machine, comprising a front frame 1 and a rear frame 2 hinged to the rear of the front frame 1. The front frame 1 serves as a mounting base for components such as an engine and a steering gear, and the rear frame 2 serves as a mounting base for components such as a seat and implements.

[0048] like Figure 1 As shown, the front frame 1 is a double-layer bracket structure, which includes a front upper bracket 11 and a front lower bracket 12 arranged up and down, and a front gearbox 13 fixedly connected to the front upper bracket 11 and the front lower bracket 12. The front upper bracket 11 and the front lower bracket 12 both extend in a direction away from the head of the tiller.

[0049] The rear frame 2 is also a double-layer frame structure, which includes a rear upper frame 21 and a rear lower frame 22 arranged one above the other, and a rear gearbox 23 fixedly connected to the rear upper frame 21 and the rear lower frame 22. The rear upper frame 21 and the rear lower frame 22 extend toward the front upper frame 11 and the front lower frame 12 respectively.

[0050] The front upper bracket 11 and the rear upper bracket 21 are connected in a hinged manner, and the front lower bracket 12 and the rear lower bracket 22 are also connected in a hinged manner.

[0051] In actual use, the front gearbox 13 is mounted on the front wheel through the front wheel axle 3, and the rear gearbox 23 is mounted on the rear wheel through the rear wheel axle 4. The front gearbox 13 and the rear gearbox 23 are connected by a transmission member (not shown in the figure). When the micro-tiller is working, the engine transmits power to the front gearbox 13, and the front gearbox 13 transmits power to the rear gearbox 23, thereby realizing four-wheel drive. When turning, the steering gear and steering assembly on the micro-tiller drive the rear bracket 2 to rotate relative to the front bracket 1, thereby realizing the micro-tiller's waist turning.

[0052] The frame structure of the four-wheel drive riding micro-tiller is such that when the micro-tiller turns, in response to the drive of the steering gear and the steering assembly, the rear upper bracket 21 can rotate relative to the front upper bracket 11, and the rear lower bracket 22 can rotate relative to the front lower bracket 12, thereby achieving the micro-tiller's waist-turning steering. Due to the frame structure, a double-layer bracket structure is adopted. Specifically, the front upper bracket 11 and the rear upper bracket 21 constitute the upper bracket, and the front lower bracket 12 and the rear lower bracket 22 constitute the lower bracket. This double-layer bracket structure makes the entire frame have good stability, significantly improving the driving stability of the micro-tiller.

[0053] See Figure 2 、 Figure 3 、 Figure 4 One of the front upper bracket 11 and the rear upper bracket 21 has a shaft 5, while the other has a socket 6 for the shaft 5 to be inserted. A first bearing 7a is disposed between the shaft 5 and the socket 6. The first bearing 7a is fixedly embedded in the inner wall of the socket 6, and the shaft 5 is fixedly inserted into the inner ring of the first bearing 7a. Because the first bearing 7a is disposed between the shaft 5 and the socket 6, the rear upper bracket 21 can easily rotate relative to the front upper bracket 11 when the tiller turns, making the tiller more flexible and easy to turn.

[0054] In a specific embodiment, the insertion shaft 5 can be set on the front upper bracket 11, and the insertion hole 6 can be set on the rear upper bracket 21. Figure 3 、 Figure 4 Of course, the insertion shaft 5 can also be arranged on the rear upper bracket 21, and the insertion hole 6 can be arranged on the front upper bracket 11.

[0055] like Figure 2 、 Figure 3 、 Figure 4As shown, for ease of manufacturing, the insertion shaft 5 can be provided on the front upper bracket 11, and the insertion hole 6 can be provided on the rear upper bracket 21, so that the front upper bracket 11 is located below the rear upper bracket 21. Specifically, the insertion shaft 5 can be provided at one end of the front upper bracket 11 close to the rear upper bracket 21 and arranged upright, and the insertion hole can be provided at one end of the rear upper bracket 21 close to the front upper bracket 11.

[0056] Please attend Figure 2 、 Figure 5 、 Figure 6 One of the front lower bracket 12 and the rear lower bracket 22 has a through shaft hole 8, and the other has two support plates 9 overlapped at both ends of the shaft hole 8, and the two support plates 9 are provided with through holes at the positions corresponding to the shaft holes. A bolt shaft 10 passes through the two support plates 9 and the shaft hole 8 and is locked by a nut. A second bearing 7b is provided between the bolt shaft 10 and the shaft hole 8, and the second bearing 7b is embedded in the inner hole wall of the shaft hole 8, and the bolt shaft 10 is inserted into the inner ring of the second bearing 7b. Since the second bearing 7b is provided between the bolt shaft 10 and the shaft hole 8, when the micro-tiller turns, the rear lower bracket 22 can easily rotate relative to the front lower bracket 12, making the micro-tiller turn more convenient and flexible.

[0057] Preferably, the number of the second bearings 7b is two, and the two second bearings 7b are arranged on both sides of the axial direction of the shaft hole 8. In this way, the two second bearings 7b can better support the bolt shaft 10.

[0058] like Figure 2 、 Figure 5 、 Figure 6 As shown, in some specific embodiments, the shaft hole 8 can be provided in the rear lower bracket 22, and the two support plates 9 can be provided in the front lower bracket 12. Of course, the shaft hole 8 can also be provided in the front lower bracket 12, and the two support plates 9 can be provided in the rear lower bracket 22.

[0059] In addition, an embodiment of the present invention also provides a four-wheel drive riding micro-tillage machine with the above-mentioned frame structure. Since the four-wheel drive riding micro-tillage machine has the above-mentioned frame structure, it has all the technical effects of the above-mentioned frame structure, which will not be repeated here.

[0060] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0061] It should be understood that the use of "system," "device," "unit," and / or "module" in this application is merely a method for distinguishing different components, elements, parts, portions, or assemblies at different levels. However, if other terms can achieve the same purpose, the terms may be replaced by other expressions.

[0062] As used in this application and the claims, unless the context clearly indicates an exception, the terms "a," "an," "an," and / or "the" are not intended to refer to the singular and may include the plural, unless the context clearly indicates otherwise. Generally speaking, the terms "comprises" and "include" only indicate the inclusion of the steps and elements specifically identified, and these steps and elements do not constitute an exclusive list. A method or apparatus may also include other steps or elements. The phrase "comprises a..." does not preclude the presence of additional identical elements in the process, method, product, or apparatus that includes the elements.

[0063] In the description of the embodiments of this application, unless otherwise specified, " / " represents or. For example, A / B can represent A or B. "And / or" in this article is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of this application, "plurality" means two or more than two.

[0064] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the quantity of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0065] If a flow chart is used in this application, the flow chart is used to illustrate the operations performed by the system according to the embodiments of the application. It should be understood that the previous or subsequent operations are not necessarily performed in exact order. Instead, the steps can be processed in reverse order or simultaneously. At the same time, other operations can be added to these processes, or one or more operations can be removed from these processes.

[0066] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help you understand the core concept of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A frame structure of a four-wheel drive riding micro-tillage machine, comprising a front frame (1) and a rear frame (2) hinged to the rear of the front frame (1); characterized in that: The front frame (1) is a double-layer support structure, comprising a front upper support (11) and a front lower support (12) arranged above and below, and a front gearbox (13) fixedly connected to the front upper support (11) and the front lower support (12); wherein the front upper support (11) and the front lower support (12) both extend in a direction away from the head of the micro-tiller; The rear frame (2) is also a double-layer support structure, comprising a rear upper support (21) and a rear lower support (22) arranged up and down, and a rear gearbox (23) fixedly connected to the rear upper support (21) and the rear lower support (22); wherein the rear upper support (21) and the rear lower support (22) extend toward the direction of the front upper support (11) and the front lower support respectively; The front upper bracket (11) and the rear upper bracket (21) are connected in a hinged manner, and the front lower bracket (12) and the rear lower bracket (22) are also connected in a hinged manner.

2. The frame structure of the four-wheel drive riding micro-tillage machine according to claim 1, characterized in that: One of the front upper bracket (11) and the rear upper bracket (21) has an insertion shaft (5), and the other has a socket (6) for inserting the insertion shaft (5); A first bearing (7a) is provided between the insertion shaft (5) and the insertion hole (6), the first bearing (7a) is fixedly embedded in the inner hole wall of the insertion hole (6), and the insertion shaft (5) is fixedly inserted into the inner ring of the first bearing (7a).

3. The frame structure of the four-wheel drive riding micro-tillage machine according to claim 2, characterized in that: The insertion shaft (5) is arranged on the front upper bracket (11), and the insertion hole (6) is arranged on the rear upper bracket (21).

4. The frame structure of the four-wheel drive riding micro-tillage machine according to claim 3, characterized in that: The front upper bracket (11) is located below the rear upper bracket (21); The insertion shaft (5) is arranged at one end of the front upper bracket (11) close to the rear upper bracket (21) and is arranged upright and upward, and the insertion hole (6) is arranged at one end of the rear upper bracket (21) close to the front upper bracket (11).

5. The frame structure of the four-wheel drive riding micro-tillage machine according to claim 1, characterized in that: One of the front lower bracket (12) and the rear lower bracket (22) has a through shaft hole (8), and the other has two support plates (9) overlapped at both ends of the shaft hole (8), and the two support plates (9) are provided with through holes at positions corresponding to the shaft hole (8); A bolt shaft (10) passes through the two support plates (9) and the shaft hole (8) and is locked by a nut; A second bearing (7b) is provided between the bolt shaft (10) and the shaft hole (8), the second bearing (7b) is embedded in the inner hole wall of the shaft hole (8), and the bolt shaft (10) is inserted into the inner ring of the second bearing (7b).

6. The frame structure of the four-wheel drive riding micro-tillage machine according to claim 5, characterized in that: The number of the second bearings (7b) is two, and the two second bearings (7b) are arranged on both axial sides of the shaft hole (8).

7. The frame structure of the four-wheel drive riding micro-tillage machine according to claim 5, characterized in that: The shaft hole (8) is provided on the rear lower bracket (22), and the two support plates (9) are provided on the front lower bracket (12).

8. A four-wheel drive riding micro-tillage machine, comprising a frame structure, characterized in that: The frame structure is the frame structure according to any one of claims 1 to 7.

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