A rotary tillage tool mounting structure
By combining the rotary tiller column, blade mounting bracket, protective shell, top rod, limit block, and return spring, the problem of easy corrosion of the rotary tiller blade connectors is solved, the positioning bolts are protected and the blades are easily replaced, thus improving the safety and operating efficiency of the rotary tiller.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- AINONG (SHANDONG) AGRICULTURAL MACHINERY CO LTD
- Filing Date
- 2025-09-04
- Publication Date
- 2026-07-28
AI Technical Summary
The connectors of the existing rotary tiller blade mounting structure are susceptible to corrosion from soil, moisture, and crop residues, leading to rust and wear, which affects the blade's stability and increases the difficulty of disassembly and replacement, posing a safety hazard.
It adopts a combination structure of rotary tiller, blade mounting bracket, protective shell, top rod, limit block and return spring. The protective shell covers the positioning bolts, and the top rod and locking groove limit the position of the protective shell to prevent separation. The return spring facilitates blade replacement.
It effectively protects the positioning bolts, avoids corrosion, simplifies the disassembly and replacement process of the blade, and improves safety and ease of operation.
Smart Images

Figure CN224556304U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rotary tillage tool technology, specifically a rotary tillage tool mounting structure. Background Technology
[0002] Rotary tillers are tillage machines that work 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] A search revealed a rotary tiller mounting structure (CN220798960U), comprising a U-shaped frame. Through slots are provided on both side walls of the U-shaped frame. An electric push rod is fixedly mounted on the top of the U-shaped frame. One end of the electric push rod extends through the U-shaped frame and is fixedly connected to a lifting plate. Two sets of positioning plates are symmetrically fixedly mounted on the lower surface of the lifting plate. A rotating shaft is rotatably mounted on the opposite side wall of the two sets of positioning plates. A drive assembly for providing power to the rotating shaft is provided on the upper surface of the lifting plate.
[0004] The implementation of this technical solution has at least the following drawbacks: Although the utility model uses bolts and other connectors to fix the blades, in the complex environment of the field, these connectors are exposed for a long time and are susceptible to corrosion from soil, water, and crop residues, leading to rust and wear. This not only affects the blades' stability but also increases the difficulty of disassembling and replacing them later, and may even cause safety hazards due to connector failure. Therefore, we propose a rotary tiller blade mounting structure. Utility Model Content
[0005] The purpose of this utility model is to provide a rotary tillage tool mounting structure, which solves the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a rotary tiller blade mounting structure, including a rotary tiller column, a plurality of blade mounting brackets welded to the upper end of the rotary tiller column, a plurality of insertion interfaces provided on the blade mounting brackets, a plurality of blades provided on the outer side of the blade mounting brackets, and a protective component for protecting the connecting parts provided on one side of the blade mounting brackets.
[0007] Optionally, the protective component includes a protective shell disposed on the outside of the rotary tiller column, the protective shell being disposed on one side of the blade mounting bracket, a fixing block being disposed on one side of the protective shell, the fixing block being fixedly connected to the rotary tiller column by welding, and a snap-fit groove being provided on the side of the fixing block near the protective shell.
[0008] The inner cavity of the snap-fit groove is provided with a limiting groove. Both sides of the protective shell are provided with a top rod. The top rod is movably connected to the snap-fit groove. A limiting block is fixedly installed on the side of the top rod near the limiting groove. The limiting block is movably connected to the limiting groove.
[0009] Optionally, the right side of the blade mounting bracket is provided with multiple positioning bolts, and each positioning bolt corresponds to a blade.
[0010] Optionally, the blades are configured as four, and the blades are arranged in a ring.
[0011] Optionally, the size of the protective shell is adapted to the outer dimensions of the blade mounting bracket, and the protective shell is movably connected to the outer side of the blade mounting bracket.
[0012] Optionally, a return spring is fixedly installed in the inner cavity of the protective shell, and the other end of the return spring is fixedly connected to the blade mounting bracket.
[0013] Compared with the prior art, the beneficial effects of the technical solution of this application are as follows:
[0014] The technical solution of this application, through the design of a rotary tiller, blade mounting bracket, protective shell, top rod, limiting block, and return spring, allows the protective shell to cover the left side of the blade mounting bracket, thus protecting the positioning bolts on the blade mounting bracket from corrosion and affecting the disassembly and replacement of the blades. It also allows the top rod to slide into the snap-fit groove, pressing and limiting the position of the protective shell to prevent separation between the protective shell and the blade mounting bracket. Furthermore, the snap-fit method facilitates installation by workers. Finally, the return spring moves the protective shell to the right to reset, facilitating the turning of the positioning bolts and thus the replacement of the blades. Attached Figure Description
[0015] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:
[0016] Figure 1 This is a three-dimensional structural diagram of a rotary tillage tool mounting structure according to the present invention;
[0017] Figure 2 This is a schematic diagram of the protective component structure of a rotary tiller blade mounting structure according to the present invention;
[0018] Figure 3 This is a partial enlarged view of point A of the rotary tiller blade mounting structure of this utility model;
[0019] Figure 4 This is a side view of the fixing block of the rotary tiller mounting structure of this utility model.
[0020] In the diagram: 1. Rotary tiller column; 11. Blade mounting bracket; 12. Blade; 13. Positioning bolt; 2. Protective shell; 21. Fixing block; 22. Snap-fit groove; 23. Limiting groove; 24. Top rod; 25. Limiting block; 3. Return spring. Detailed Implementation
[0021] Please see Figure 1-4 This utility model provides a technical solution: a rotary tiller blade mounting structure, including a rotary tiller column 1, a plurality of blade 12 mounting brackets 11 welded to the upper end of the rotary tiller column 1, a plurality of insertion interfaces opened on the blade 12 mounting brackets 11, a plurality of blades 12 arranged on the outer side of the blade 12 mounting brackets 11, and a protective component for protecting the connecting parts arranged on one side of the blade 12 mounting brackets 11.
[0022] In this embodiment, during installation, the blade 12 is first inserted into the insertion interface on the blade 12 mounting bracket 11, and then the positioning bolt 13 is rotated to position the blade 12. At the same time as the blade 12 is installed in place, the right side of the blade 12 mounting bracket 11 is covered and protected by the protective component. In addition, the protective component covers and protects the positioning bolt 13 on the blade 12 mounting bracket 11, so as to avoid the positioning bolt 13 being affected by corrosion and thus prevent the blade 12 from being disassembled and replaced.
[0023] In this technical solution, the protective component includes a protective shell 2 disposed on the outside of the rotary tiller 1. The protective shell 2 is disposed on one side of the blade 12 mounting bracket 11. A fixing block 21 is disposed on one side of the protective shell 2. The fixing block 21 is fixedly connected to the rotary tiller 1 by welding. A snap-fit groove 22 is provided on the side of the fixing block 21 near the protective shell 2.
[0024] The inner cavity of the snap-fit groove 22 is provided with a limiting groove 23. Both sides of the protective shell 2 are provided with push rods 24. The push rods 24 are movably connected to the snap-fit groove 22. A limiting block 25 is fixedly installed on the side of the push rod 24 near the limiting groove 23. The limiting block 25 is movably connected to the limiting groove 23.
[0025] In this embodiment, during protection, the protective shell 2 is first pushed to the left, so that the protective shell 2 covers the left side of the blade 12 mounting bracket 11, thereby protecting the positioning bolt 13 on the blade 12 mounting bracket 11 from corrosion and affecting the disassembly and replacement of the blade 12. Then, the push rod 24 is slid into the snap-fit groove 22, and the position of the protective shell 2 is limited by the push rod 24, thereby preventing the protective shell 2 from separating from the blade 12 mounting bracket 11. Moreover, the snap-fit method facilitates the installation operation by the staff. When the blade 12 needs to be replaced, the push rod 24 is first separated from the snap-fit groove 22, and then the spring rebound elasticity causes the return spring 3 to drive the protective shell 2 to move to the right to reset, thereby facilitating the turning of the positioning bolt 13 and thus facilitating the replacement of the blade 12.
[0026] In this technical solution, multiple positioning bolts 13 are provided on the right side of the blade 12 mounting bracket 11, and the positioning bolts 13 correspond one-to-one with the blade 12.
[0027] In this embodiment, the positioning bolt 13 facilitates the replacement of the blade 12.
[0028] In this technical solution, four blades 12 are provided, and the blades 12 are arranged in a ring.
[0029] In this technical solution, the size of the protective shell 2 is adapted to the outer dimensions of the blade 12 mounting bracket 11, and the protective shell 2 is movably connected to the outer side of the blade 12 mounting bracket 11.
[0030] In this embodiment, the protective shell 2 is provided to facilitate the shielding and protection of the positioning bolt 13.
[0031] In this technical solution, a return spring 3 is fixedly installed in the inner cavity of the protective shell 2, and the other end of the return spring 3 is fixedly connected to the mounting bracket 11 of the blade 12.
[0032] In this embodiment, the protective shell 2 can be reset by setting the reset spring 3.
[0033] During installation, first insert the blade 12 into the connector on the blade 12 mounting bracket 11, then rotate the positioning bolt 13 to position the blade 12. For protection, first push the protective shell 2 to the left, so that the protective shell 2 covers the left side of the blade 12 mounting bracket 11, thus protecting the positioning bolt 13 on the blade 12 mounting bracket 11 from corrosion and hindering the disassembly and replacement of the blade 12. Then slide the push rod 24 into the snap-fit groove 22, using the push rod 24 to press and limit the position of the protective shell 2, thus preventing the protective shell 2 from separating from the blade 12 mounting bracket 11. The snap-fit method also facilitates installation. When the blade 12 needs to be replaced, first separate the push rod 24 from the snap-fit groove 22, then, relying on the spring's rebound, the return spring 3 moves the protective shell 2 to the right to reset, making it easier to rotate the positioning bolt 13 and thus facilitating the replacement of the blade 12.
Claims
1. A rotary tiller mounting structure comprising a rotary tiller column (1), characterized by: The upper end of the rotary tiller (1) is welded with multiple blade (12) mounting brackets (11). Multiple insertion interfaces are provided on the blade (12) mounting brackets (11). Multiple blades (12) are provided on the outer side of the blade (12) mounting brackets (11). A protective component for protecting the connector is provided on one side of the blade (12) mounting brackets (11).
2. A rotating tiller blade mounting structure according to claim 1, characterized in that: The protective assembly includes a protective shell (2) disposed on the outside of the rotary tiller (1). The protective shell (2) is disposed on one side of the blade (12) mounting bracket (11). A fixing block (21) is provided on one side of the protective shell (2). The fixing block (21) is fixedly connected to the rotary tiller (1) by welding. A snap-fit groove (22) is provided on the side of the fixing block (21) near the protective shell (2). The inner cavity of the snap-fit groove (22) is provided with a limiting groove (23). The protective shell (2) is provided with a top rod (24) on both sides. The top rod (24) is movably connected to the snap-fit groove (22). A limiting block (25) is fixedly installed on the side of the top rod (24) near the limiting groove (23). The limiting block (25) is movably connected to the limiting groove (23).
3. A rotating tiller blade mounting structure according to claim 2, wherein: Multiple positioning bolts (13) are provided on the right side of the blade (12) mounting bracket (11), and the positioning bolts (13) correspond one-to-one with the blade (12).
4. A rotating tiller blade mounting structure according to claim 3, wherein: The blades (12) are configured as four, and the blades (12) are arranged in a ring.
5. A rotating blade mounting structure according to claim 4, wherein: The size of the protective shell (2) is adapted to the outer dimensions of the blade (12) mounting bracket (11), and the protective shell (2) is movably connected to the outer side of the blade (12) mounting bracket (11).
6. A rotating blade mounting structure according to claim 5, wherein: A reset spring (3) is fixedly installed in the inner cavity of the protective shell (2), and the other end of the reset spring (3) is fixedly connected to the blade (12) mounting bracket (11).