Riding type mowing vehicle and double-blade chassis mechanism thereof

By incorporating rotation limiters and locking mechanisms into the dual-blade chassis mechanism, the safety hazards associated with changing blades in dual-blade lawnmowers are resolved, ensuring both safety and convenience during blade replacement, and improving cutting efficiency and blade stability.

CN224402227UActive Publication Date: 2026-06-26ZHEJIANG CHANGJIANG MACHINERY
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Patent Information

Application Number
CN202521628560.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-01
Publication Date
2026-06-26
Estimated Expiration
2035-08-01

AI Technical Summary

Technical Problem

Existing dual-blade lawnmowers pose a safety hazard when changing blades. The two blades are linked by a mechanism, requiring operators to be wary of the rotation of the other blade, which could result in cuts.

Method used

It adopts a dual-blade chassis mechanism, which restricts the rotation of the shaft by limiting the rotation of the shaft. The rotation of the shaft is restricted by the cooperation of the insert rod and the slot, ensuring that you can focus on the disassembly of the current blade, reducing safety hazards. The blade can be quickly locked and disassembled by the cooperation of screws and splines.

Benefits of technology

It improves the safety and convenience of blade replacement, reduces safety hazards, ensures operational stability and cutting efficiency, and enhances blade lifespan.

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Abstract

The utility model relates to a riding type mowing vehicle and a double-knife chassis mechanism thereof. The riding type mowing vehicle comprises a knife disc and two cutting knife assemblies. The cutter assembly comprises a mounting seat, a rotating shaft, a blade, a locking piece and a rotation limiting piece, the cutter head is provided with two mounting through grooves, the mounting seat is detachably fixed in the through grooves, the rotating shaft is rotationally connected to the mounting seat, and the locking piece locks the rotating shaft and the blade. The rotation limiting piece comprises a fixing block, an inserting rod and an adjusting rod, a plurality of inner grooves are formed in the outer wall of the mounting base, and the fixing block is detachably connected to the inner grooves; the fixed block is provided with a threaded hole, the adjusting rod is in threaded connection with the fixed block, and the end part of the adjusting rod extends out and is provided with a cross-shaped groove; the mounting base is provided with a movable groove for the insertion rod to enter, the rotating shaft is provided with an insertion groove matched with the insertion rod, an adjusting gap is reserved between the fixing block and the bottom wall of the inner groove, and the insertion rod is always in the movable groove. When the blades are replaced, the adjusting rod is rotated to insert the inserting rod into the inserting groove to limit rotation, linkage of the two blades is avoided, safety is improved, and the fixing block is detachable to facilitate assembly and disassembly of the rotation limiting piece.
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