A walk-behind rotary cultivator

Abstract

The utility model discloses a hand -held formula rotary cultivator, including hand -held formula walking frame, engine, gear box, transmission connection structure and transmission case, engine and gear box are installed on hand -held formula walking frame, and the power output of gear box is connected with the power input of hand -held formula walking frame transmission, and the output shaft of engine is connected with the power output of gear box and transmission connection structure transmission respectively, and the power output of transmission connection structure is connected with the power input of transmission case transmission, and transmission case is connected with hand -held formula walking frame, and the power output of transmission case is provided with rotary cultivator mechanism. The engine of this rotary cultivator is assisted transmission connection structure and carries out power transmission to hand -held formula walking frame and rotary cultivator simultaneously, replaces traditional belt drive, avoids the abrasion and frequent replacement of belt, and moreover, the transmission power of transmission connection structure will not be limited, greatly guarantees the power transmission, and the rotary cultivator can work in the power range of engine.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, and in particular to a hand-held rotary tiller. Background Technology

[0002] Rotary tillers are tillage machines used in conjunction with tractors to perform tilling and harrowing operations. They are widely used because of their strong soil-breaking ability and the flat surface they leave after tilling; at the same time, they can chop up the stubble buried below the surface, making it easier for seeders to operate and providing a good seedbed for later sowing.

[0003] Most existing walk-behind rotary tillers use a single engine and a transmission mechanism to drive both the walking unit and the rotary tilling unit in a coordinated manner. For example, Chinese utility model patent with publication number CN222764240U, entitled "A Rotary Tiller," shows, with reference to the accompanying drawings, that it uses a single engine directly connected to the walking unit, while simultaneously using a belt drive mechanism to connect the rotary tilling unit. This type of transmission mechanism causes significant belt wear and power reduction when transmitting power to the rotary tilling unit, which is not conducive to the high-power operation of the rotary tiller. Utility Model Content

[0004] The purpose of this invention is to provide a walk-behind rotary tiller to solve the problem that existing rotary tillers suffer significant belt wear and power reduction when transmitting power to the rotary tilling unit, which is detrimental to the high-power operation of the rotary tiller.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A walk-behind rotary tiller includes a walk-behind frame, an engine, a gearbox, a transmission connection structure, and a transmission housing. The engine and gearbox are both mounted on the walk-behind frame. The power output end of the gearbox is drive-connected to the power input end of the walk-behind frame. The output shaft of the engine is drive-connected to both the gearbox and the power output end of the transmission connection structure. The power output end of the transmission connection structure is drive-connected to the power input end of the transmission housing. The transmission housing is connected to the walk-behind frame, and a rotary tillage mechanism is provided at the power output end of the transmission housing.

[0006] A further technical solution is that the output shaft is connected to the power input shaft of the gearbox via a worm gear pair or a bevel gear pair.

[0007] A further technical solution is as follows: the transmission connection structure includes a housing, a slider, a rotating block, a clutch block, a drive mechanism, and an input shaft. The housing is mounted on the gearbox, the slider is slidably mounted inside the housing, the drive mechanism is mounted on the housing, and one end of the drive mechanism extends into the housing and drives the slider to move within the housing. The rotating block is rotatably mounted inside the slider, the clutch block is mounted in the inner cavity of the slider, the input shaft is rotatably mounted inside the housing, the head of the input shaft is a perforated shaft and slidably engages with the perforated groove in the rotating block, and the head of the output shaft is adapted to the clutch block.

[0008] A further technical solution is that the input shaft is connected to the transmission box in a transmission connection.

[0009] A further technical solution is that the clutch block and the output shaft are provided with interlocking arc-shaped protrusions on their respective end faces.

[0010] A further technical solution is: the driving mechanism includes a rotating shaft, a gear, and a rack. The rotating shaft is rotatably mounted on the housing, the gear is mounted on the inner end of the rotating shaft, and the rack is mounted on the slider, and the gear and the rack mesh with each other.

[0011] A further technical solution is that a wrench is provided at the outer end of the rotating shaft.

[0012] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects: This utility model proposes a hand-held rotary tiller. This rotary tiller uses an engine to transmit power to both the hand-held walking frame and the rotary tilling mechanism simultaneously through a transmission connection structure, replacing the traditional belt drive. This avoids belt wear and frequent replacement, and the transmission power of the transmission connection structure is not limited, greatly ensuring the transmission of power. This rotary tiller can perform high-power work within the engine's power range. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a hand-held rotary tiller according to the present invention.

[0014] Figure 2 This utility model Figure 1 A structural diagram from another perspective.

[0015] Figure 3 This utility model Figure 1 A structural diagram from a side view.

[0016] Figure 4 This utility model Figure 1 A schematic diagram of the transmission connection structure.

[0017] Figure 5 This utility model Figure 1 A schematic diagram of the drive mechanism.

[0018] Figure 6 This utility model Figure 4 A schematic diagram of the clutch block structure.

[0019] Reference numerals: 1. Hand-held walking frame; 2. Engine; 3. Gearbox; 4. Transmission connection structure; 5. Transmission box; 6. Output shaft; 7. Rotary tillage mechanism; 8. Housing; 9. Slider; 10. Rotating block; 11. Clutch block; 12. Drive mechanism; 13. Input shaft; 14. Rotating shaft; 15. Gear; 16. Rack; 17. Arc-shaped protrusion; 18. Wrench. Detailed Implementation

[0020] 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 embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0023] 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.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," 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. They are only used 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. Therefore, they should not be construed as limitations 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.

[0025] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example

[0026] This implementation example Figure 1 , Figure 2 and Figure 3 As shown, a walk-behind rotary tiller includes a walk-behind frame 1, an engine 2, a gearbox 3, a transmission connection structure 4, and a transmission box 5. The engine 2 and the gearbox 3 are both mounted on the walk-behind frame 1. The power output end of the gearbox 3 is connected to the power input end of the walk-behind frame 1. The output shaft 6 of the engine 2 is connected to the power output ends of both the gearbox 3 and the transmission connection structure 4. The power output end of the transmission connection structure 4 is connected to the power input end of the transmission box 5. The transmission box 5 is connected to the walk-behind frame 1, and a rotary tillage mechanism 7 is provided at the power output end of the transmission box 5.

[0027] The engine 2 of this walk-behind rotary tiller can transmit power to both the walk-behind frame 1 and the transmission box 5 simultaneously through the transmission connection structure 4. The transmission box 5 then drives the rotary tilling mechanism 7 to work. This rotary tiller replaces the traditional belt drive, avoiding belt wear and frequent replacement. Moreover, the transmission power of the transmission connection structure is not limited, which greatly ensures the transmission of power. This rotary tiller can perform high-power work within the power range of the engine.

[0028] Preferably, the output shaft 6 is connected to the power input shaft of the gearbox 3 via a worm gear pair or a bevel gear pair.

[0029] The worm gear is mounted on the output shaft 6 of the engine 2 and on the power input shaft of the gearbox 3, so as to realize the power transmission from the engine 2 to the gearbox 3; Two bevel gears mesh with each other and are respectively mounted on the output shaft 6 of engine 2 and the power input shaft of gearbox 3 to realize the power transmission from engine 2 to gearbox 3. Example

[0030] Based on the above embodiments, this embodiment, for example Figure 4 , Figure 5 and Figure 6 As shown, the transmission connection structure 4 includes a housing 8, a slider 9, a rotating block 10, a clutch block 11, a drive mechanism 12, and an input shaft 13. The housing 8 is mounted on the gearbox 3. The slider 9 is slidably mounted inside the housing 8. The drive mechanism 12 is mounted on the housing 8, with one end extending inside the housing 8 and driving the slider 9 to move within the housing 8. The rotating block 10 is rotatably mounted inside the slider 9. The clutch block 11 is mounted in the inner cavity of the slider 9. The input shaft 13 is rotatably mounted inside the housing 8. The head of the input shaft 13 is a perforated shaft and slides in conjunction with the perforated groove in the rotating block 10. The head of the output shaft 6 is adapted to the clutch block 11. The input shaft 13 is connected to the transmission box 5.

[0031] When the rotary tiller starts working, the engine 2 drives the walk-behind frame 1 to move through the gearbox 3. When the rotary tillage mechanism 7 needs to work, the drive mechanism 12 first drives the slider 9 to move within the housing 8. The slider 9, along with the rotating block 10 and the clutch block 11, moves towards the output shaft 13 until the clutch block 11 connects with the output shaft 6. At this point, the output shaft 6 rotates along with the clutch block 11 and the rotating block 10, thereby driving the input shaft 13 to rotate. The input shaft 13 is connected to the power input end of the transmission box 5. Finally, the power of the engine 2 is transmitted to the rotary tillage mechanism 7 through the transmission connection structure 4 and the transmission box 5. This transmission connection structure 1 has a simple structure, can be adapted to agricultural machinery, and reduces the production cost of agricultural machinery.

[0032] Preferably, such as Figure 6 As shown, the clutch block 11 and the output shaft 6 are provided with interlocking arc-shaped protrusions 17 on their respective end faces.

[0033] The arc-shaped protrusion 17 at the end of the clutch block 11 and the arc-shaped protrusion 17 at the end of the output shaft 6 engage with each other to achieve the effect of engagement, thereby achieving the purpose of power transmission.

[0034] Preferably, such as Figure 5 As shown, the drive mechanism 12 includes a rotating shaft 14, a gear 15, and a rack 16. The rotating shaft 14 is rotatably mounted on the housing 8, the gear 15 is mounted on the inner end of the rotating shaft 14, and the rack 16 is mounted on the slider 9, and the gear 15 and the rack 16 mesh with each other.

[0035] Gear 15 rotates together with shaft 14, driving rack 16 to move back and forth, which in turn drives slider 9 to move back and forth, ultimately achieving the clutch control effect.

[0036] Preferably, a wrench 18 is provided at the outer end of the rotating shaft 14.

[0037] The operator can control the clutch effect of the transmission connection structure with minimal effort using wrench 18.

[0038] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

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