Self-adaptive transmission structure for rotary cultivator

By designing an adaptive transmission structure in the transmission structure of the rotary tiller, and using tensioning wheels and springs to maintain the appropriate tension of the chain, the problem of chain damage due to excessive tension is solved, and the operation stability of the rotary tiller is improved.

CN222674898UActive Publication Date: 2025-03-28钟景富
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Patent Information

Application Number
CN202421230858.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-31
Publication Date
2025-03-28
Estimated Expiration
2034-05-31

AI Technical Summary

Technical Problem

In existing rotary tillers, chains that use medium transmission connections are easily damaged due to excessive tension, resulting in unstable operation.

Method used

An adaptive transmission structure is designed. By providing baffles and tensioning wheels on both sides of the chain, the tensioning force of the tensioning spring is used to maintain the appropriate tension of the chain, and the chain length is adaptively adjusted through the tensioning wheel during the lifting and lowering of the tool holder to avoid excessive tension.

Benefits of technology

It effectively solves the problem of chain damage due to excessive tension, improves the operating stability of the rotary tiller, and protects the sprocket shaft, gears and bearings on the transmission box, reducing the failure rate.

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Abstract

According to the self-adaptive transmission structure for the rotary cultivator, a tension spring with pretension force exerts downward force on a tensioning wheel, so that the tensioning wheel plays a role in tensioning a chain, when a tool rest is in a lifting state, compared with a trial state in the background technology, the length of the chain can be properly increased, and certain tensioning degree is kept through the tensioning wheel; when the tool rest descends, the distance between the driving chain wheel and the driven chain wheel is increased, due to the fact that the length of the chain is increased, although the chain is further tensioned, the chain is not in a completely-tensioned or excessively-tensioned state, the tension spring is further lengthened, and the tensioning degree of the chain can meet the requirement for driving the tilling tool to tilling the land. Due to the fact that the chain is not tightened completely and the tensioning wheel is not fixed, the chain can be adjusted in a self-adaptive mode under the impact effect, the buffering effect is achieved through loosening or further tensioning, the problem that the chain of the rotary cultivator in transmission connection is prone to being damaged due to excessive tightening can be effectively solved, and the operation stability of the rotary cultivator can be improved.
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