A power transmission component structure for an electric micro-tiller

Abstract

This utility model discloses a power transmission component structure for an electric micro-tiller, belonging to the field of agricultural machinery technology. It includes a mounting frame, with a transmission mechanism fixedly connected to the upper surface of the mounting frame. An adjustment mechanism is provided on the inner wall of the transmission mechanism. The transmission mechanism includes a mounting plate fixedly connected to the upper surface of the mounting frame, a motor fixedly connected to the side surface of the mounting plate, and a reducer fixedly connected to the upper surface of the mounting plate. The output shaft of the motor is fixedly connected to the input end of the reducer. This power transmission component structure for an electric micro-tiller forms a closed space through a screw connection between a sealed housing and a support plate, effectively isolating external dust, mud, and moisture, and preventing impurities from entering the sprockets, chains, and other transmission components. Simultaneously, the grease applied to the surface of the components reduces meshing friction and wear, lowers operating noise, and the detachable design of the sealed housing facilitates later maintenance and replacement.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, specifically a power transmission component structure for an electric micro-tiller. Background Technology

[0002] As a small farming device, the stability of the power transmission system of electric mini-tillers directly affects the operating efficiency and equipment lifespan. Chain drive is widely used in the power transmission of mini-tillers due to its simple structure and stable torque transmission.

[0003] During long-term, high-intensity operation, chains are prone to loosening due to factors such as soil resistance, vibration and impact, and fatigue of their own materials. Loose chains directly lead to a decrease in transmission stability. When operating a mini tiller, uneven soil hardness and collisions with stones in the field can cause the chain to be subjected to intermittent impact loads. After long-term use, the wear between the chain link pins and sleeves intensifies, the total length of the chain gradually lengthens, and obvious loosening occurs. Therefore, it is difficult to adjust the tightness of the chain.

[0004] Therefore, this utility model provides a power transmission component structure for an electric micro-tiller to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a power transmission component structure for an electric micro-tiller, thus solving the aforementioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a power transmission component structure for an electric micro-tiller, comprising a mounting frame, a transmission mechanism fixedly connected to the upper surface of the mounting frame, an adjustment mechanism provided on the inner wall of the transmission mechanism, the transmission mechanism including a mounting plate fixedly connected to the upper surface of the mounting frame, a motor fixedly connected to the side surface of the mounting plate, and a reducer fixedly connected to the upper surface of the mounting plate, the output shaft of the motor being fixedly connected to the input end of the reducer, a support plate fixedly connected to the outer surface of the reducer, and a drive sprocket fixedly connected to the output shaft of the reducer passing through the outer surface of the support plate, the adjustment mechanism including a limiting groove provided on the side surface of the support plate, a threaded rod rotatably connected to the inner wall of the limiting groove, a moving block threadedly connected to the outer surface of the threaded rod, a fixed shaft fixedly connected to the side surface of the moving block, and a roller rotatably connected to the outer surface of the fixed shaft.

[0007] Furthermore, a driven sprocket is rotatably connected to the outer surface of the support plate, and a chain is sleeved on the outer surfaces of the driven sprocket and the drive sprocket, with the outer surface of the chain meshing with the outer surfaces of the drive sprocket and the driven sprocket.

[0008] The above technical solution features high transmission efficiency and stable torque transmission through the meshing of sprockets and chains, making it suitable for high-load operation scenarios of micro-tillers; the chain connects the drive sprocket and the driven sprocket, enabling long-distance power transmission from the reducer to the rotary tillage blades.

[0009] Furthermore, the outer surface of the driven sprocket is fixedly connected to a rotary tiller via a connecting shaft, the rotary tiller is rotatably connected to the inner side of the mounting frame, and a sealing shell is attached to the side surface of the support plate.

[0010] By adopting the above technical solution, the rotational motion of the driven sprocket is directly transmitted to the rotary tiller blades through the connecting shaft. The rotary tiller blades are rotatably connected to the mounting frame to ensure stability during tillage. The sealed shell can isolate external dust, soil and moisture, and protect internal components such as sprockets and chains from contamination.

[0011] Furthermore, the outer surface of the sealing housing is threaded with a screw, the other end of which is threaded to the side surface of the support plate, and the outer surfaces of the driven sprocket, the drive sprocket, the chain, and the threaded rod are coated with grease.

[0012] By adopting the above technical solution, the sealing shell and the support plate can be detachably fixed by screw connection, which facilitates later maintenance and component replacement; the lubricating grease can reduce the meshing friction between the sprocket and the chain, and the thread friction between the threaded rod and the moving block, reduce component wear, extend service life and reduce operating noise.

[0013] Furthermore, the side surface of the movable block is slidably connected to the inner wall of the limiting groove, and the side surface of the movable block is rotatably connected to the side surface of the roller.

[0014] By adopting the above technical solution, the sliding cooperation between the moving block and the limiting groove further restricts its movement trajectory and avoids deviation during adjustment; the roller is rotatably connected to the moving block, which can convert the sliding friction between the chain and the moving block into rolling friction, reduce wear on the chain surface, and improve the smoothness of the adjustment process.

[0015] Furthermore, one end of the threaded rod is fixedly connected to a knob through the outer surface of the sealing housing, and the outer surface of the roller is in contact with the outer surface of the chain.

[0016] Using the above technical solution, operators can easily rotate the threaded rod directly from the outside using a knob to adjust the chain tension without disassembling the sealed housing, thus improving maintenance convenience; the rollers fit snugly against the chain, and the chain tension can be precisely adjusted by changing the position of the rollers, ensuring that the chain is always in the best transmission state and avoiding excessive looseness leading to skipped teeth or excessive tightness leading to overload.

[0017] Beneficial effects

[0018] This utility model provides a power transmission component structure for an electric micro-tiller. Compared with the prior art, it has the following advantages:

[0019] 1. The power transmission component structure of this electric micro-tiller forms a closed space by connecting the sealed housing and the support plate with screws, which can effectively isolate external dust, mud and moisture, and prevent impurities from entering the transmission components such as sprockets and chains; at the same time, the grease applied to the surface of the components can reduce meshing friction and wear, reduce operating noise, and the detachable design of the sealed housing facilitates later maintenance and replacement.

[0020] 2. The power transmission component structure of this electric micro-tiller uses a knob to drive the threaded rod to rotate. Under the guidance of the limiting groove, the moving block drives the roller to precisely approach or move away from the chain, thereby achieving tension adjustment. The roller converts sliding friction into rolling friction, reducing chain wear. It can be operated without disassembling the sealed housing, ensuring that the chain is always stably engaged, avoiding excessive looseness and skipping teeth or excessive tightness and overload, and improving the convenience of adjustment and transmission reliability. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a perspective view of the external structure of this utility model;

[0023] Figure 2 This is a front sectional view of the structure of this utility model;

[0024] Figure 3 This is a side sectional view of the structure of this utility model;

[0025] Figure 4 This is a top sectional view of the structure of this utility model;

[0026] Figure 5 yes Figure 4 A magnified structural diagram of A in the middle.

[0027] In the diagram: 1. Mounting bracket; 2. Transmission mechanism; 201. Reducer; 202. Support plate; 203. Sealed housing; 204. Screw; 205. Motor; 206. Drive sprocket; 207. Driven sprocket; 208. Chain; 209. Mounting plate; 3. Rotary tiller blade; 4. Adjustment mechanism; 401. Threaded rod; 402. Limiting groove; 403. Fixed shaft; 404. Roller; 405. Knob; 406. Moving block. Detailed Implementation

[0028] It should be noted that in the description of the embodiments of this application, the terms "front," "rear," "left," "right," "up," "down," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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 of this application. The terms "installation," "connection," and "linking" 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 direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0029] The present application will be further described in detail below with reference to the accompanying drawings and embodiments.

[0030] Reference Figures 1 to 5 This application provides a power transmission component structure for an electric micro-tiller, including a mounting frame 1. A transmission mechanism 2 is fixedly connected to the upper surface of the mounting frame 1. An adjustment mechanism 4 is provided on the inner wall of the transmission mechanism 2. The transmission mechanism 2 includes a mounting plate 209 fixedly connected to the upper surface of the mounting frame 1. A motor 205 is fixedly connected to the side surface of the mounting plate 209, and a reducer 201 is fixedly connected to the upper surface of the mounting plate 209. The output shaft of the motor 205 is fixedly connected to the input end of the reducer 201. A support plate 202 is fixedly connected to the outer surface of the reducer 201, and a drive sprocket 206 is fixedly connected to the output shaft of the reducer 201 through the outer surface of the support plate 202. The adjustment mechanism 4 includes a limiting groove 402 provided on the side surface of the support plate 202. A threaded rod 401 is rotatably connected to the inner wall of the limiting groove 402. A moving block 406 is threadedly connected to the outer surface of the threaded rod 401. A fixed shaft 403 is fixedly connected to the side surface of the moving block 406, and a roller 404 is rotatably connected to the outer surface of the fixed shaft 403.

[0031] Furthermore, a driven sprocket 207 is rotatably connected to the outer surface of the support plate 202. A chain 208 is fitted onto the outer surfaces of the driven sprocket 207 and the drive sprocket 206. The outer surface of the chain 208 meshes with the outer surfaces of the drive sprocket 206 and the driven sprocket 207. A rotary tiller 3 is fixedly connected to the outer surface of the driven sprocket 207 via a connecting shaft. The rotary tiller 3 is rotatably connected to the inner side of the mounting bracket 1. A sealing housing 203 is attached to the side surface of the support plate 202. A screw 204 is threaded onto the outer surface of the sealing housing 203. The other end of the screw 204 is threaded onto the side surface of the support plate 202. Lubricating grease is applied to the outer surfaces of the driven sprocket 207, the drive sprocket 206, the chain 208, and the threaded rod 401.

[0032] In this embodiment, by using the knob 405 to drive the threaded rod 401 to rotate, under the guidance of the limiting groove 402, the moving block 406 drives the roller 404 to precisely approach or move away from the chain 208, thereby achieving tension adjustment. The roller 404 converts sliding friction into rolling friction, reducing wear on the chain 208, and can be operated without disassembling the sealing housing 203, ensuring that the chain 208 is always stably engaged, avoiding excessive looseness and skipping teeth or excessive tightness and overload, and improving the convenience of adjustment and transmission reliability.

[0033] Reference Figures 1 to 5 In one aspect of this embodiment, the side surface of the movable block 406 is slidably connected to the inner wall of the limiting groove 402, and the side surface of the movable block 406 is rotatably connected to the side surface of the roller 404.

[0034] Furthermore, one end of the threaded rod 401 passes through the outer surface of the sealing housing 203 and is fixedly connected to a knob 405, and the outer surface of the roller 404 is in contact with the outer surface of the chain 208. The reducer 201 adopts a worm gear reducer 201, which is suitable for small-power micro-tillers. It has the characteristics of compact structure and good self-locking, and can prevent the blades from reversing.

[0035] In this embodiment, the sealed housing 203 is connected to the support plate 202 by screws 204 to form a closed space, which can effectively isolate external dust, dirt and moisture, and prevent impurities from entering the transmission components such as sprockets and chains 208; at the same time, the grease applied to the surface of the components can reduce meshing friction and wear, reduce operating noise, and the detachable design of the sealed housing 203 facilitates later maintenance and replacement.

[0036] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0037] Working principle: After the motor 205 starts, its output shaft transmits power to the reducer 201. The reducer 201 reduces the speed and increases the torque through its internal gear set, driving the drive sprocket 206 at the output end to rotate. The drive sprocket 206 drives the driven sprocket 207 to rotate synchronously through the chain 208. The driven sprocket 207 then drives the rotary tiller 3 to rotate through the connecting shaft, realizing the tillage operation. When it is necessary to adjust the tension of the chain 208, rotate the knob 405 on the outside of the sealing housing 203, driving the threaded rod 401 to rotate. Under the guidance of the limit groove 402, the moving block 406 on the threaded rod 401 moves along a straight line. The movement causes the roller 404 on the fixed shaft 403 to move closer to or further away from the chain 208. When the roller 404 moves closer to the chain 208, the tension of the chain 208 increases; when the roller 404 moves further away, the tension of the chain 208 decreases. Through this adjustment process, it is ensured that the chain 208 is always stably engaged with the drive sprocket 206 and the driven sprocket 207, avoiding tooth skipping, slippage, or excessive wear. The sealing housing 203 is fixed to the support plate 202 by screws 204. With the grease applied inside, it not only prevents external impurities from entering the transmission components but also reduces the wear of various friction surfaces, ensuring the long-term stable operation of the power transmission components.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A power transmission component structure for an electric micro-tiller, comprising a mounting frame (1), characterized in that: The upper surface of the mounting bracket (1) is fixedly connected to a transmission mechanism (2), and the inner wall of the transmission mechanism (2) is provided with an adjustment mechanism (4); The transmission mechanism (2) includes a mounting plate (209) fixedly connected to the upper surface of the mounting frame (1), a motor (205) fixedly connected to the side surface of the mounting plate (209), and a reducer (201) fixedly connected to the upper surface of the mounting plate (209). The output shaft of the motor (205) is fixedly connected to the input end of the reducer (201). A support plate (202) is fixedly connected to the outer surface of the reducer (201), and a drive sprocket (206) is fixedly connected to the output shaft of the reducer (201) through the outer surface of the support plate (202). The adjustment mechanism (4) includes a limiting groove (402) disposed on the side surface of the support plate (202). A threaded rod (401) is rotatably connected to the inner wall of the limiting groove (402). A moving block (406) is threadedly connected to the outer surface of the threaded rod (401). A fixed shaft (403) is fixedly connected to the side surface of the moving block (406). A roller (404) is rotatably connected to the outer surface of the fixed shaft (403).

2. The power transmission component structure for an electric micro-tiller according to claim 1, characterized in that: The outer surface of the support plate (202) is rotatably connected to a driven sprocket (207). A chain (208) is sleeved on the outer surface of the driven sprocket (207) and the drive sprocket (206). The outer surface of the chain (208) meshes with the outer surface of the drive sprocket (206) and the driven sprocket (207).

3. The power transmission component structure for an electric micro-tiller according to claim 2, characterized in that: The outer surface of the driven sprocket (207) is fixedly connected to a rotary tiller (3) via a connecting shaft. The rotary tiller (3) is rotatably connected to the inner side of the mounting frame (1), and a sealing shell (203) is attached to the side surface of the support plate (202).

4. The power transmission component structure for an electric micro-tiller according to claim 3, characterized in that: The outer surface of the sealed housing (203) is threaded with a screw (204), the other end of which is threaded to the side surface of the support plate (202), and the outer surfaces of the driven sprocket (207), the drive sprocket (206), the chain (208) and the threaded rod (401) are coated with grease.

5. The power transmission component structure for an electric micro-tiller according to claim 4, characterized in that: The side surface of the movable block (406) is slidably connected to the inner wall of the limiting groove (402), and the side surface of the movable block (406) is rotatably connected to the side surface of the roller (404).

6. The power transmission component structure for an electric micro-tiller according to claim 5, characterized in that: One end of the threaded rod (401) passes through the outer surface of the sealing housing (203) and is fixedly connected to a knob (405), and the outer surface of the roller (404) is in contact with the outer surface of the chain (208).

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