Rice greenhouse seedling raising and seed pressing device
By designing an adjustable-weight compaction roller structure, the problem of insufficient fixed weight in traditional compaction rollers was solved, enabling full contact between seeds and soil and improving the germination rate and root health of rice seedlings.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2026-03-31
AI Technical Summary
Traditional hand-push compaction rollers with fixed weight cannot meet the requirements of different compaction degrees, resulting in over-compaction or under-compaction, which affects the insufficient contact between seeds and soil and affects the germination rate.
A seed pressing device for rice seedling cultivation in a greenhouse was designed. The device uses an adjustable-weight compaction roller structure, including an operating rod, an extension rod, an installation component, and a triangular fixing frame. The weight of the compaction roller can be adjusted using sealing bolts to meet different compaction requirements.
It enables the adjustment of the weight of the compaction roller according to needs, ensuring full contact between seeds and soil, improving seedling uniformity and root stability, and enhancing the root system's ability to absorb water and fertilizer.
Smart Images

Figure CN224054802U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of greenhouse rice seedling cultivation, and in particular to a seed pressing device for greenhouse rice seedling cultivation. Background Technology
[0002] Rice seedling cultivation refers to the process of cultivating rice seedlings under suitable conditions to ensure their healthy growth and prepare them for subsequent planting and production. It is an activity specifically for planting and cultivating strong seedlings. After sowing, rice seedlings need to be compacted to increase the soil density in the seedbed, allowing the seeds to make better contact with the soil. Uniform compaction helps guide the seedling roots to grow downwards, enhancing the stability of the root system and its ability to absorb water and fertilizer, thus ensuring strong seedlings in dry conditions.
[0003] The seed compaction device for rice greenhouse seedling cultivation mainly consists of a hand-push compaction roller. The roller is manually pushed across the seedbed surface, applying uniform pressure to the sown seeds and ensuring close contact with the soil. The compaction roller is typically a lightweight cylindrical structure, made of lightweight material that does not easily trap soil. Its principle is to improve the contact surface between the seedbed and the soil through appropriate compaction, reducing gaps between the seeds and the soil, enhancing capillary action, promoting the absorption of water and nutrients, preventing seed displacement, and improving the uniformity of seedling emergence.
[0004] When using a traditional hand-operated compaction roller for seed compaction, the fixed weight of the roller cannot meet the different compaction requirements, resulting in over-compaction or under-compaction. This leads to insufficient contact between the seeds and the soil, affecting germination. To address this issue, a seed compaction device for rice greenhouse seedling cultivation is proposed. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a rice greenhouse seed pressing device, which aims to improve the problem that the fixed weight of the compaction roller in the existing technology cannot meet the different compaction requirements, thus causing over-compression or under-compression.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A rice greenhouse seed pressing device includes an operating rod and an extension rod. An installation component is provided on one side of the operating rod. Two triangular fixing frames are installed on the outside of the installation component. A compaction roller is rotatably connected to the adjacent sides of the two triangular fixing frames. A sealing bolt is installed on one side of the compaction roller. An extension column is fixedly connected to one side of the extension rod. A threaded groove is provided on one side of the operating rod. The external thread of the extension column is threaded to the inner wall of the threaded groove.
[0008] As a further description of the above technical solution:
[0009] The mounting assembly includes two mounting bolts, the external threads of which are connected to one side of the triangular fixing bracket, and the external threads of which are connected to nuts. The operating rod has two mounting holes on its exterior.
[0010] As a further description of the above technical solution:
[0011] One side of the nut contacts one side of the triangular fixing bracket;
[0012] As a further description of the above technical solution:
[0013] The operating lever is connected to the triangular fixing frame via the mounting bolt;
[0014] As a further description of the above technical solution:
[0015] The outer side of the mounting bolt penetrates the inner wall of the mounting hole.
[0016] This utility model has the following beneficial effects:
[0017] In this invention, by setting a sealing bolt, sand can be added into the compaction roller to adjust the weight of the compaction roller to meet different compaction requirements. During the compaction process, the operator only needs to control the compaction roller to roll on the seedling tray by operating the operating lever or operating the extension lever. Compared with the prior art, the weight of the compaction roller can be adjusted to meet different compaction requirements and ensure that the seeds are in full contact with the soil. Attached Figure Description
[0018] Figure 1 This is a three-dimensional schematic diagram of a rice greenhouse seed pressing device proposed in this utility model;
[0019] Figure 2 This is a schematic diagram of the installation bolts for a rice greenhouse seed pressing device proposed in this utility model;
[0020] Figure 3 This is a schematic diagram of the structure of the extension column of a rice greenhouse seedling pressing device proposed in this utility model.
[0021] Legend:
[0022] 1. Operating lever; 2. Triangular fixing bracket; 3. Compacting roller; 4. Sealing bolt; 5. Extension column; 6. Extension rod; 7. Threaded groove; 8. Mounting bolt; 9. Nut; 10. Mounting hole. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Reference Figures 1 to 3 This utility model provides an embodiment of a rice greenhouse seedling pressing device, including an operating rod 1 and an extension rod 6. The operating rod 1 provides the main operating fulcrum for the device, facilitating manual gripping and force application. The operating rod 1 is a hollow metal rod. An installation component is provided on one side of the operating rod 1. The installation component is used for quick assembly, disassembly, and adjustment of the device structure. Two triangular fixing frames 2 are installed on the outside of the installation component. The triangular fixing frames 2 adopt a triangular stable structure to ensure uniform force distribution during the compaction process. The triangular fixing frames 2 are made of metal. A compaction roller 3 is rotatably connected to the adjacent side of the two triangular fixing frames 2. The compaction roller 3 can rotate freely to achieve rolling compaction operation. The length of the compaction roller 3 is slightly less than the length of the seedling tray. This design can completely cover the width of the seedling tray while avoiding collision and interference with the edge of the tray. A sealing bolt 4 is installed on one side of the compaction roller 3. The sealing bolt 4 is used to seal the filling port of the compaction roller 3 and facilitates the adjustment of the counterweight.
[0025] An extension column 5 is fixedly connected to one side of the extension rod 6. The extension column 5 serves as a connecting component for length adjustment. A threaded groove 7 is provided on one side of the operating rod 1. The threaded groove 7 cooperates with the extension column 5 to realize the rod extension function. The external thread of the extension column 5 is connected to the inner wall of the threaded groove 7. The threaded connection method ensures a stable connection and facilitates disassembly. The mounting assembly includes two mounting bolts 8, which provide a detachable mechanical connection method. The external thread of the mounting bolt 8 is connected to one side of the triangular fixing frame 2, realizing the quick assembly of the operating rod 1 and the compaction roller 3. The external thread of the mounting bolt 8 is connected to a nut 9, which is used to lock the mounting bolt 8 to prevent loosening during operation. Two mounting holes 10 are opened on the outside of the operating rod 1. The mounting holes 10 provide precise positioning for the bolts. One side of the nut 9 contacts one side of the triangular fixing frame 2. The connection is ensured by pressing the nut 9. The operating rod 1 is connected to the triangular fixing frame 2 through the mounting bolt 8. This connection method facilitates maintenance and component replacement. The external thread of the mounting bolt 8 penetrates the inner wall of the mounting hole 10 to realize the reliable fixation of the operating rod 1 and the triangular fixing frame 2.
[0026] Working principle: When the equipment is needed, the two triangular fixing brackets 2 are installed on both sides of the compaction roller 3. The operating rod 1 is then placed on the side close to the two triangular fixing brackets 2. The mounting hole 10 is aligned with the through hole on the surface of the triangular fixing bracket 2. The mounting bolt 8 is inserted into the mounting hole 10. Finally, the nut 9 is installed on the external thread of the mounting bolt 8 to fix the operating rod 1 and complete the connection. The extension post 5 on the extension rod 6 is aligned with the threaded groove 7, and the extension post 5 is placed into the threaded groove 7 through threaded connection to connect the extension rod 6 with the operating rod 1. This allows the length of the operating rod 1 to be extended for convenient operation and to meet the needs of different usage scenarios. Finally, the sealing bolt 4 can be removed. Sand can be added to the inside of the compaction roller 3 to adjust the weight of the compaction roller 3 to meet different compaction requirements. During use, the compaction roller 3 can be rolled on the seedling tray simply by controlling the operating rod 1 or the extension rod 6.
[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.
Claims
1. A rice greenhouse seedling seed pressing device, comprising an operating rod (1) and an extension rod (6), characterized in that: One side of the operating rod (1) is provided with a mounting assembly, the outer side of the mounting assembly is provided with two triangular fixing frames (2), the proximal side of the two triangular fixing frames (2) is rotatably connected with a compaction roller (3), one side of the compaction roller (3) is provided with a sealing bolt (4), one side of the extension rod (6) is fixedly connected with an extension column (5), one side of the operating rod (1) is provided with a threaded groove (7), the outer side of the extension column (5) is screwedly connected with the inner wall of the threaded groove (7).
2. The rice seed presser device for greenhouse seedling raising according to claim 1, characterized in that: The mounting assembly comprises two mounting bolts (8), the outer side of the mounting bolt (8) is screwedly connected with one side of the triangular fixing frame (2), the outer side of the mounting bolt (8) is screwedly connected with a nut (9), the outer side of the operating rod (1) is provided with two mounting holes (10).
3. The rice seed presser device for greenhouse seedling raising according to claim 2, characterized in that: One side of the nut (9) is in contact with one side of the triangular fixing frame (2).
4. The rice seed presser device for greenhouse seedling raising according to claim 2, characterized in that: The operating rod (1) is connected with the triangular fixing frame (2) through the mounting bolt (8).
5. The rice seed presser device for greenhouse seedling raising according to claim 2, characterized in that: The outer side of the mounting bolt (8) penetrates the inner wall of the mounting hole (10).