On-shaft maintenance tool for rotary blade of rotary cultivator
By designing a rotary tiller blade on-shaft maintenance tool with a chuck and handle structure, the problem of inconvenient rotary tiller blade maintenance in the existing technology has been solved, achieving accurate calibration of the rotary tiller blade and improving maintenance efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-23
- Publication Date
- 2026-03-17
AI Technical Summary
Existing technology lacks effective tools for repairing rotary tillers, resulting in inaccurate calibration and inconvenience in use.
A rotary tiller blade on-shaft maintenance tool was designed, which includes a chuck and a handle. The chuck has a locking hole and an opening, and the handle is slidable. The rotary tiller blade is calibrated by turning the handle.
A user-friendly rotary tiller blade repair tool is provided, which can accurately correct the shape of the rotary tiller blade and improve repair efficiency.
Smart Images

Figure CN223996980U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mechanical repair tools, specifically to a tool for repairing rotary tiller blades on the shaft. Background Technology
[0002] A rotary tiller has a tilling shaft with multiple rotary blades mounted on it. These blades are made of steel plates and feature multiple curved surfaces with complex lines; generally, they are long, hook-shaped structures. During use, the rotary blades often deform, affecting normal operation and performance, necessitating maintenance.
[0003] Repairing rotary tillers is generally done on the tiller shaft. Currently, there are no tools specifically designed for repairing rotary tillers; a hand hammer is used, which has drawbacks such as inaccurate calibration and inconvenience. Summary of the Invention
[0004] The purpose of this invention is to address the aforementioned shortcomings by providing a convenient tool for repairing rotary tiller blades on the shaft.
[0005] The technical solution of this utility model is implemented as follows: a rotary tiller blade on-shaft maintenance tool, characterized in that: it includes a chuck for holding the rotary tiller blade, the chuck having a through hole for holding the neck of the rotary tiller blade, an opening on the side of the hole for the neck of the rotary tiller blade to enter the hole, and a handle mounted on the chuck, the handle including a longitudinal handle and a transverse handle, the opening occupying a part of the side of the hole.
[0006] Furthermore, the chuck has a sliding groove, and the handle has a locking slot that mates with the groove; the handle is mounted on the sliding groove via the locking slot.
[0007] Furthermore, the chuck hole is rectangular, with its length direction being vertical. The opening is located on the top of the chuck. On the right side of the chuck, there is a horizontal through hole with internal threads, and a positioning screw is installed in the through hole.
[0008] The beneficial effects of this utility model are: such a rotary tiller blade shaft repair tool has the advantage of being easy to use and can meet some repair needs. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the structure of this utility model.
[0010] Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure along the A-A direction.
[0011] Among them: 1. Chuck 11. Clamping hole 12. Opening 13. Solid part 14. Slide groove 15. Through hole 2. Rotary tiller blade 3. Handle 31. Longitudinal handle 32. Transverse handle 33. Clamping slot 4. Screw. Detailed Implementation
[0012] The present invention will be further described below with reference to the accompanying drawings.
[0013] like Figure 1 , 2 As shown, a rotary tiller blade on-shaft maintenance tool is characterized by: it includes a chuck 1 for holding the rotary tiller blade, the chuck being made of steel plate, the chuck having a through-hole 11 for holding the rotary tiller blade 2, an opening 12 on the side of the hole for the rotary tiller blade to enter the hole, and a handle 3 mounted on the chuck, the handle including a longitudinal handle 31 and a transverse handle 32; the opening occupies a portion of the side of the hole.
[0014] The opening occupies a portion of the side of the card hole. For example, there is a solid part 13 on one side of the opening, which is the non-opening part. This solid part can be used to adjust the rotary tiller when the rotary tiller is adjusted using the longitudinal handle.
[0015] When repairing or calibrating a rotary tiller, this invention allows the tiller to be inserted into the chuck through the tool's opening. By turning the handle, the chuck can be rotated to calibrate the tiller, i.e., to bend it. For example, turning the horizontal handle downwards will bend the tiller to the left; or turning the vertical handle downwards will bend the tiller to the back.
[0016] Furthermore, the chuck has a sliding groove 14, and the handle has a locking slot 33 that mates with the groove. The handle is mounted on the sliding groove via the locking slot.
[0017] When using this invention, the handle can be slid within the groove. The direction of arrow F in the figure is the direction in which the handle slides.
[0018] Furthermore, the aforementioned card hole is rectangular, with its length running vertically, such as... Figure 1 As shown, the opening is located on the top of the chuck, and there is a horizontal through hole 15 on the right side of the chuck. The through hole has internal threads, and a positioning screw 4 is installed in the through hole.
[0019] This design allows for adjustment of the space within the clamping hole for holding the rotary tiller blade, making it more convenient to use.
[0020] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.
[0021] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.
Claims
1. A tool for repairing rotary tiller blades on the shaft, characterized in that: It includes a chuck clamping rotary tiller, the chuck has up and down through clamping rotary tiller neck hole, the hole side has opening, the opening is rotary tiller neck into the hole, the handle is installed on the chuck, the handle includes longitudinal handle and transverse handle, the opening occupies a part of the hole side.
2. The tool for repairing the shaft of the rotary tiller rotary tiller blade according to claim 1, characterized in that: The chuck has sliding groove, the handle has clamping opening matching the groove, the handle is installed on the groove through the opening.
3. The rotary tiller blade on-shaft maintenance tool according to claim 1 or 2, characterized in that: The hole is rectangular, the length direction is up and down, the opening is set on the upper side of the chuck, the right side of the chuck has transverse through hole, the through hole has internal thread, the positioning screw is installed in the through hole.