A ratchet wrench for dismounting the bolts of a helicopter collector ring

CN224688884UActive Publication Date: 2026-08-28CHINESE PEOPLES LIBERATION ARMY UNIT 69008
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Patent Information

Application Number
CN202522121225.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-10-06
Publication Date
2026-08-28
Estimated Expiration
2035-10-06

AI Technical Summary

Technical Problem

[0002]直升机主桨的集流环顶部通常与位于客舱顶部的加温线缆保护罩通过螺栓固定，螺栓上有U形卡槽，在使用通用拆卸工具安装或拆卸直升机主桨集流环上的固定螺栓时容易打滑，不便于拆卸和安装，因此，本实用新型提供一种能够快速拆卸集流环螺栓的棘轮扳手

Benefits of technology

[0010]本实用新型针对直升机主桨集流环固定螺栓上有U形卡槽，通用拆卸工具安装或拆卸时易打滑、不便于操作的问题，该棘轮扳手通过可拆卸连接的拆卸头，利用其卡接端设置的U形卡块，可精准卡接螺栓，有效避免打滑，实现快速、便捷地拆卸和安装集流环螺栓。同时，连接头与拆卸头通过方形槽和弹性卡接结构含弹性件、定位珠及定位卡槽实现可靠连接与定位，方便拆卸头的更换以适应不同需求。

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Abstract

The utility model relates to a kind of dismounting ratchet spanners suitable for helicopter current collector ring bolt, including ratchet handle, connector and dismounting head, connector is provided on the ratchet handle, the connecting end of the dismounting head is equipped with square groove, the connecting end of the dismounting head is detachably connected with ratchet handle by square groove, the connecting end of the dismounting head is equipped with clamping groove, the U-shaped clamping block for clamping bolt is arranged in the inside of clamping groove, the utility model aims at the problem that U-shaped clamping groove is on helicopter main propeller current collector ring fixing bolt, it is easy to slip when general dismounting tool is installed or dismounted, inconvenient to operate, the ratchet spanner is through the dismounting head of detachable connection, using the U-shaped clamping block of its clamping end setting, bolt can be accurately clamped, effectively avoid slipping, realize the quick, convenient dismounting and installation current collector ring bolt.
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Claims

1. A ratchet wrench suitable for removing helicopter manifold bolts, characterized in that, The device includes a ratchet handle (1), a connector (2), and a disassembly head (3). The ratchet handle (1) is provided with a connector (2). The disassembly head (3) has a square groove (4) at its connecting end. The connecting end of the disassembly head (3) is detachably connected to the ratchet handle (1) through the square groove (4). The disassembly head (3) has a snap-fit ​​groove (5) at its snap-fit ​​end. A U-shaped snap-fit ​​block (6) for snapping bolts is provided inside the snap-fit ​​groove (5).

2. A ratchet wrench for removing helicopter manifold bolts according to claim 1, characterized in that, The four inner walls of the square groove (4) are provided with positioning slots (7) along the axial direction. The positioning slots (7) are arc-shaped grooves.

3. A ratchet wrench for removing helicopter manifold bolts according to claim 2, characterized in that, The connector (2) is provided with an elastic snap-fit ​​structure that can correspond to any positioning slot (7). The elastic snap-fit ​​structure includes an installation slot, an elastic element (8) and a positioning bead (9). The installation slot is horizontally opened on the outside of the connector (2). The elastic element (8) and the positioning bead (9) are both installed on the inside of the installation slot. The elastic element (8) can be fitted into the positioning slot (7). The two ends of the elastic element (8) are fixedly connected to the installation slot and the positioning bead (9) respectively. The elastic element (8) is used to connect the connector (2) and the disassembly head (3) by pressing the positioning bead (9) into the positioning slot (7).

4. A ratchet wrench for removing helicopter manifold bolts according to claim 1, characterized in that, The disassembly head (3) is made of quenched 42CrMo stainless steel.