基于粮仓通风口启闭的螺母松紧工具
By designing a nut tightening tool suitable for grain silo ventilation openings, the problem of time-consuming and laborious nut tightening and loosening was solved. It provides a convenient nut driving method, applicable to both regular and handwheel nuts, thus improving operational efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SINOGRANS (WUHAN) RESERVES CO LTD
- Filing Date
- 2025-08-26
- Publication Date
- 2026-07-17
AI Technical Summary
Tightening or loosening the nuts at the grain silo ventilation openings is time-consuming and laborious, especially when using handwheel nuts in narrow and humid environments. The tools are difficult to drive, and the driving tools for regular nuts and handwheel nuts are different, which requires workers to frequently change tools.
A nut tightening tool has been designed, including a sleeve, a drawstring tube, and a handle. The sleeve has hexagonal and circular grooves to match different types of nuts. The drawstring tube can be switched to accommodate different nuts. The handle extends into a wide space through an extension section, providing a longer lever arm for easy operation.
It enables convenient driving of two types of nuts at the grain silo ventilation opening, reducing operation time and effort consumption, and improving work efficiency.
Smart Images
Figure CN224509598U_ABST
Abstract
Claims
1. A nut tightening tool based on the opening and closing of the grain bin air vent, characterized in that, The nut tightening tool includes: a sleeve (10), a gathering tube (20), and a handle rod (30); The sleeve (10) comprises, from front to back, a working section (40) and an extension section (50); The working section (40) has a hexagonal groove (41) and a circular groove (42) sequentially formed from front to back at its axis. The hexagonal groove (41) matches the conventional nut (01), and the circular groove (42) matches the threaded sleeve (02) of the handwheel nut; The working section (40) has several notches (43) extending from the head end to the rear on its cylindrical wall. The notches (43) correspond one-to-one with the lever arm (03) of the handwheel nut. The notches (43) are used to fit the corresponding lever arm (03) to achieve the snap-fit between the working section (40) and the handwheel nut. The extension section (50) has a through hole (51) along its axis, and the through hole (51) is connected to the circular groove (42); The gathering tube (20) is sleeved outside the sleeve (10). When the conventional nut (01) needs to be driven, the gathering tube (20) radially gathers the wall of the working section (40); when the handwheel nut needs to be driven, the gathering tube (20) moves backward. The extension section (50) is provided with a radially extending handle rod (30) at its tail end. The handle rod (30) passes through the cylinder wall of the extension section (50) and is welded thereto.
2. The nut tensioning tool based on the opening and closing of the silo vent according to claim 1, characterized in that, A limiting slot (44) is provided at the rear end of the notch (43). The diameter of the limiting slot (44) is larger than the diameter of the lever arm (03). The limiting slot (44) is used to accommodate the lever arm (03) and restrict the lever arm (03) from sliding axially along the notch (43).
3. The nut tensioning tool based on the opening and closing of the silo vent according to claim 1, wherein, The outer diameter of the extension section (50) is smaller than the outer diameter of the working section (40); The gathering tube (20) comprises, from front to back, a gathering section and a positioning section; The inner diameter of the converging section matches the outer diameter of the working section (40), and the inner diameter of the positioning section matches the outer diameter of the extension section (50).
4. The nut tensioning tool based on the opening and closing of the silo vent according to claim 3, characterized in that, The outer wall of the extension section (50) is provided with a first external thread (52) and a second external thread (53), and the inner wall of the positioning section is provided with an internal thread (21). When the internal thread (21) is threadedly connected to the first external thread (52), the coiling cylinder (20) retracts to the back of the notch (43), and the nut tightening tool is used to drive the handwheel nut at this time; When the internal thread (21) is threadedly connected to the second external thread (53), the converging cylinder (20) radially converges the cylinder wall of the working section (40), and the nut tightening tool is used to drive the conventional nut (01).
5. The grain bin vent actuated nut tensioning tool of claim 1, wherein, The outer wall of the gathering tube (20) is provided with friction ribs (22).
6. The grain bin vent actuated nut tensioning tool of claim 1, wherein, The distance between opposite sides of the inner hole of the hexagonal groove (41) is set to 16mm.