Haymaking machine

The locking device for tine arms in hay advertising machines ensures a secure, easy-to-use connection that withstands dynamic loads, addressing the challenges of existing technologies by using a lever-like leg element with a spring tensioning force for stable operation.

DE102023119520A1Pending Publication Date: 2025-01-30SIP STROJNA INDA D D
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Patent Information

Application Number
DE102023119520
Authority / Receiving Office
DE · DE
Patent Type
Applications
Current Assignee / Owner
Filing Date
2023-07-24
Publication Date
2025-01-30

AI Technical Summary

Technical Problem

Existing hay advertising machines face challenges in providing a locking mechanism for tine arms that is quick, reliable, easy to use, and resistant to wear, while effectively transferring bending moments, torques, and longitudinal forces during operation.

Method used

A locking device for tine arms comprising a holding element and a locking element with a lever-like leg element, featuring a retention agent that forms a form closure with the holding element, allowing for secure connection and disconnection of the inner and outer parts of the tine arm, with a spring tensioning force to maintain the connection under dynamic loads.

Benefits of technology

The solution provides a high-shape-resistant connection that withstands dynamic loads, facilitates easy assembly and disassembly, and prevents relative movement between the parts, enhancing the operational stability and ease of use of the hay advertising machine.

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Abstract

The invention relates to a haymaking machine (10) for raking together crops lying on the ground, comprising at least one tine rotor (14) on which at least one tine arm (18) rotating with the tine rotor (14) is arranged and which is equipped with at least one raking tine (22), wherein the tine arm (18) comprises at least an inner part (24) facing the tine rotor (14) and a radially outer part (26) receiving the raking tine (22) relative to the center of the tine rotor, wherein the inner part (24) and the outer part (26) are axially detachably connectable to one another in a plug-in direction (SR), wherein the tine arm (18) comprises a retaining element (32) and a locking element (30) for fixing the two connected parts (24, 26), the locking element being detachably fixed in a recess (34) of the retaining element (32), wherein the The locking element (30) and the retaining element (32) are each attached to different parts (24, 26) of the tine arm (18).The invention is characterized in that the locking element (30) has a lever-like leg element (36) which has a retaining means (38) which, in the fixed state, forms a positive locking connection with the retaining element (32), wherein the locking element (30) is further designed such that an angular movement can be carried out with the leg element (32) against a spring preload force (F) directed transversely to the insertion direction (SR) in order to release the positive locking connection between the retaining means (38) and the retaining element (32).
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Citation Information

Patent Citations

  • Hay raking machine with tines for gathering hay together has tines on ends of detachable arms mounted on stub arms on central hub with spring clip engaging flange

    DE102004036671A1

  • Haymaker with spike carrying unit and locking mechanism

    DE19746216A1

  • haymaking machine

    DE8624527U1