Profiling mechanism for film mulching rice transplanter

Abstract

The profiling mechanism comprises a fixing frame, a first connecting rod, a second connecting rod and a film pressing roller, the fixing frame is fixed to a rack of the film mulching rice transplanter, and the first connecting rod is slidably connected with a sliding cavity of the fixing frame in the vertical direction; the lower end of the first connecting rod extends in the vertical direction and is hinged to the film pressing roller, and the upper end of the first connecting rod extends in the horizontal direction and is fixedly connected with the second connecting rod which is fixedly connected with the rice transplanting mechanism. The film pressing roller, the first connecting rod and the second connecting rod are used for directly feeding back the fluctuation change of the field surface to the rice transplanting mechanism in a ratio of 1: 1, so that the profiling precision of the rice transplanting mechanism is improved, and precise profiling is realized.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, specifically a contouring mechanism for a mulched rice transplanter. Background Technology

[0002] To improve production efficiency and reduce labor intensity, mechanization is widely adopted in crop cultivation. The mulching rice transplanter is a new type of agricultural machinery developed from the original rice transplanter. Compared to the original rice transplanter, which can only complete the transplanting task, the mulching rice transplanter can perform both mulching and transplanting simultaneously, greatly improving work efficiency. During mulching, pressure rollers are commonly used to apply pressure to the mulch film, ensuring it adheres tightly to the ground and fulfills its functions of warming, retaining moisture, and preventing weed growth.

[0003] When a rice transplanter is working, the contour-following mechanism allows the transplanting mechanism to automatically adjust its height according to the undulations of the field surface, maintaining a suitable transplanting depth and thus improving transplanting quality and work efficiency. Traditional rice transplanters often use a float plate to contact the farmland. The float plate has a large contact area with the ground and is very sensitive to contour-following. Therefore, to avoid ineffective adjustments, the transmission ratio of the contour-following mechanism in traditional rice transplanters is less than 1, meaning the height adjustment of the transplanting mechanism by the contour-following mechanism is less than the height of the float plate's undulations.

[0004] After the film-covering mechanism is added to the film-covering rice transplanter, the film-pressing roller assists in contouring while pressing the film, replacing the original contouring float of the rice transplanter. However, the film-pressing roller has a small contact area with the ground, which reduces the contouring sensitivity and fails to meet the contouring accuracy requirements. Therefore, the contouring part needs to be redesigned to adapt to the existing film-covering rice transplanter. Utility Model Content

[0005] To address the issue of low contour-following accuracy when applied to existing film-mulched rice transplanters, this invention provides a contour-following mechanism for film-mulched rice transplanters. This invention uses a film-pressing roller, a first connecting rod, and a second connecting rod to directly feed back ground undulations to the transplanting mechanism at a 1:1 ratio, thereby improving the contour-following accuracy and achieving precise contour-following.

[0006] The technical solution adopted by this utility model is:

[0007] A contouring mechanism for a mulched rice transplanter includes a fixed frame, a first connecting rod, a second connecting rod, and a film-pressing roller. The fixed frame is fixed to the frame of the mulched rice transplanter. The first connecting rod is slidably connected to the sliding cavity of the fixed frame in the vertical direction. The lower end of the first connecting rod extends in the vertical direction and is hinged to the film-pressing roller. The upper end of the first connecting rod extends in the horizontal direction and is connected to the second connecting rod. The second connecting rod is fixedly connected to the transplanting mechanism.

[0008] Furthermore, the first connecting rod is inverted "L" shape.

[0009] Furthermore, the fixing frame has an extension in the horizontal direction, and the second connecting rod is slidably connected to the extension in the vertical direction.

[0010] Furthermore, the vertical length of the first connecting rod is greater than the vertical length of the second connecting rod.

[0011] The beneficial effects of this utility model are:

[0012] When the contour-following mechanism described in this utility model is working, on the one hand, the pressure roller applies pressure to the mulch film; on the other hand, when the mulched rice transplanter passes through a depression, the pressure roller moves downward under the action of gravity, and is transmitted to the transplanting mechanism in sequence via the first and second connecting rods, causing the transplanting mechanism to move downward, so that the transplanting mechanism maintains a certain height with the ground. When the mulched rice transplanter passes through a convex area, the pressure roller moves upward under the reaction force of the convex area, and is transmitted to the transplanting mechanism in sequence via the first and second connecting rods, causing the transplanting mechanism to move upward, so that the transplanting mechanism maintains a certain height with the ground. That is, the transplanting mechanism automatically adjusts its height according to the undulation of the field surface, always maintaining a suitable transplanting depth, realizing the contour-following of the mulched rice transplanter, thereby improving the transplanting quality and work efficiency. Moreover, the first connecting rod and the sliding cavity of the fixed frame are slidably connected in the vertical direction, that is, the undulation of the field surface is directly fed back to the transplanting mechanism at a 1:1 ratio, improving the contour-following accuracy of the transplanting mechanism, achieving precise contour-following, and meeting the usage requirements.

[0013] In this utility model, the fixed frame has an extension in the horizontal direction, and the second connecting rod is slidably connected to the extension in the vertical direction, which facilitates the rice transplanting mechanism to move in the vertical direction to adapt to the terrain. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the punching tool described in this utility model.

[0015] Figure 2 This is a cross-sectional view of the punching tool described in this utility model.

[0016] In the figure, 1. fixed frame, 11. sliding cavity, 12. extension, 2. first connecting rod, 3. second connecting rod, 4. pressure roller. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but the scope of protection of the present invention is not limited thereto.

[0018] Figure 1-2This is a specific embodiment of the contouring mechanism for the mulched rice transplanter described in this utility model. The contouring mechanism includes a fixed frame 1, a first connecting rod 2, a second connecting rod 3, and a film-pressing roller 4. The fixed frame 1 is fixed on the frame of the mulched rice transplanter. The first connecting rod 2 is slidably connected to the sliding cavity 11 of the fixed frame 1 in the vertical direction. The first connecting rod 2 is inverted "L" shape, and the shape of the sliding cavity 11 matches the shape of the first connecting rod 2. During operation, the first connecting rod 2 slides relative to the sliding cavity 11 in the vertical direction. The lower end of the first connecting rod 2 extends vertically and is hinged to the film-pressing roller 4, allowing the film-pressing roller 4 to roll relative to the first connecting rod 2. When the film-pressing roller 4 applies a certain pressure to the mulch film, being in a rolling state reduces the friction between the film-pressing roller 4 and the mulch film, thus reducing wear between them. The upper end of the first connecting rod 2 extends horizontally and connects to the second connecting rod 3. The second connecting rod 3 is fixedly connected to the rice transplanting mechanism. The fixing frame 1 has an extension 12 in the horizontal direction, and the second connecting rod 3 and the extension 12 are slidably connected in the vertical direction, which facilitates the rice transplanting mechanism to move vertically to adapt to the terrain. The vertical length of the first connecting rod 2 is greater than the vertical length of the second connecting rod 3. When the pressing roller 4 contacts the ground during operation, the rice transplanting mechanism is in a suspended state.

[0019] When the contour-following mechanism of this utility model is working, on the one hand, the pressure roller 4 applies pressure to the mulch film; on the other hand, when the mulch-covered rice transplanter passes through a depression, the pressure roller 4 moves downward under the action of gravity, and is transmitted to the transplanting mechanism in sequence through the first connecting rod 2 and the second connecting rod 3, causing the transplanting mechanism to move downward, so that the transplanting mechanism maintains a certain height with the ground. When the mulch-covered rice transplanter passes through a convex area, the pressure roller 4 moves upward under the reaction force of the convex area, and is transmitted to the transplanting mechanism in sequence through the first connecting rod 2 and the second connecting rod 3, causing the transplanting mechanism to move upward, so that the transplanting mechanism maintains a certain height with the ground. That is, the transplanting mechanism automatically adjusts its height according to the undulation of the field surface, always maintaining a suitable transplanting depth, realizing the contour-following of the mulch-covered rice transplanter, thereby improving the transplanting quality and work efficiency. Moreover, the first connecting rod 2 is slidably connected to the sliding cavity 11 of the fixed frame 1 in the vertical direction, that is, the undulation of the field surface is directly fed back to the transplanting mechanism 1:1, improving the contour-following accuracy of the transplanting mechanism, realizing precise contour-following, and meeting the usage requirements.

[0020] The examples described are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments. Any obvious improvements, substitutions or modifications that can be made by those skilled in the art without departing from the essential content of the present invention shall fall within the protection scope of the present invention.

Claims

1. A contouring mechanism for a mulched rice transplanter, characterized in that: The system includes a fixed frame (1), a first connecting rod (2), a second connecting rod (3), and a film pressing roller (4). The fixed frame (1) is fixed on the frame of the mulching rice transplanter. The first connecting rod (2) is slidably connected to the sliding cavity (11) of the fixed frame (1) in the vertical direction. The lower end of the first connecting rod (2) extends in the vertical direction and is hinged to the film pressing roller (4). The upper end of the first connecting rod (2) extends in the horizontal direction and is connected to the second connecting rod (3). The second connecting rod (3) is fixedly connected to the rice transplanting mechanism.

2. The contouring mechanism for the rice transplanter with film covering according to claim 1, characterized in that, The first connecting rod (2) is in the shape of an inverted "L".

3. The contouring mechanism for the mulched rice transplanter according to claim 1, characterized in that, The fixing frame (1) has an extension (12) in the horizontal direction, and the second connecting rod (3) is slidably connected to the extension (12) in the vertical direction.

4. The contouring mechanism for the rice transplanter with film covering according to claim 1, characterized in that, The vertical length of the first connecting rod (2) is greater than the vertical length of the second connecting rod (3).

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