Obstacle avoidance-type grass chopper driven by belt and flexible shaft

By using belt and soft shaft transmission in obstacle avoidance crusher and simplifying the transmission design with bevel gears and gear boxes, the existing obstacle avoidance lawn mowers have solved the problems of complex transmission structure and high hydraulic system cost, achieving lower manufacturing costs and higher operating flexibility.

WO2025043814A1PCT designated stage expired Publication Date: 2025-03-06BEIJING TIMEWOLLIN SCI & TECH DEV
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Patent Information

Application Number
PCT/CN2023/123163
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2023-09-01
Filing Date
2023-10-07
Publication Date
2025-03-06

AI Technical Summary

Technical Problem

When used under complex terrain conditions, the transmission structure is complex and easy to damage. The hydraulic system of the hydraulic barrier-avoiding cutter plate is complex, has high manufacturing cost and high maintenance cost, which is not conducive to promotion and application.

Method used

A barrier-avoiding crusher driven by belt and soft shaft is designed. The bevel gear box is used to simplify the transmission design of the obstacle-avoiding cutter plate. Through the connection between the soft shaft and the obstacle-avoiding cutter plate, the obstacle-avoiding cutter plate is achieved to meet the needs of terrain undulation and working angle.

Benefits of technology

It simplifies the transmission design, reduces manufacturing costs, improves the flexibility of operating status adjustment of obstacle avoidance cutter wheels, reduces the failure rate, and is suitable for a wider range of promotional applications.

✦ Generated by Eureka AI based on patent content.

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    Figure CN2023123163_06032025_PF_FP_ABST
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Abstract

An obstacle avoidance-type grass chopper driven by a belt and flexible shaft. In the grass chopper, a power device, a grass-chopping blade shaft (4), and an obstacle-avoiding blade disc suspension bracket (11) are mounted on a frame (1), wherein an output shaft of the power device is connected to the grass-chopping blade shaft (4) by means of a belt, and is also connected to a flexible shaft (10) by means of the belt, the other end of the flexible shaft (10) being connected to the blade shaft of an obstacle-avoiding blade disc (6); and a swing arm (7) fitted with the obstacle-avoiding blade disc (6) is hinged to the obstacle-avoiding blade disc suspension bracket (11). The transmission between a grass chopper body and the obstacle-avoiding blade disc (6) is economical and simplified, while the high rotation speed requirement for the obstacle-avoiding blade disc (6) is also met. As a grass chopper provided with vertical flail blades (13) has a better grass chopping effect and is more durable compared to a grass mower provided with horizontal blade discs, such a combination of a machine and tools can facilitate wide-range promotion and application more effectively.
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Citation Information

Patent Citations

  • Novel multi-power hand-push obstacle-avoiding grass chopper

    CN114451133A

  • Novel hammer type grass chopper with avoidance mowing cutter head

    CN115581144A

  • Swing type operation head with hinged flexible shaft

    CN217936540U

  • Novel flexible shaft transmission multi-obstacle avoidance cutter head mower

    CN219478548U

  • Obstacle avoidance cutterhead additionally arranged on existing mower

    CN219719122U