一种用于电动葫芦的安全连锁装置
By introducing a limit switch into the control circuit of the electric hoist handle, the electric hoist is started only after the hoisting hole fence is installed in place, thus solving the safety hazard of improper installation of the hoisting hole fence and achieving full-process automated safety assurance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA RESOURCES NEW ENERGY (MULAN PADDOCK) WIND ENERGY CO LTD
- Filing Date
- 2025-08-14
- Publication Date
- 2026-07-17
AI Technical Summary
The lack of interlocking devices on the lifting hole railings of electric hoists in wind farms leads to improper installation, posing a risk of falling from heights and potentially causing serious consequences such as equipment damage and production stoppages.
Design a safety interlock device that connects to the control circuit of the electric hoist handle via a limit switch to ensure that the electric hoist is only allowed to start after the hoist hole guardrail is installed in place. The device includes a normally open limit switch and a manual button assembly to achieve automated safety protection.
It effectively eliminates safety hazards caused by human error, ensures that the electric hoist starts in a protected state, and significantly improves the safety and reliability of hoisting operations.
Smart Images
Figure CN224513084U_ABST
Abstract
Claims
1. A safety interlock device for an electric hoist, characterized in that, It includes an electric hoist, a hoisting hole guard, and a limit switch. The limit switch is installed on the hoisting hole guard, and the electric hoist includes a handle. The handle has an internal control circuit, and the limit switch is connected to the internal control circuit of the handle by wiring.
2. A safety interlock device for an electric hoist according to claim 1, characterized in that, The control circuit is connected to the manual button assembly, which is located on the outer shell of the handle.
3. A safety interlock device for an electric hoist according to claim 2, characterized in that, The manual button assembly includes a first manual button, a second manual button, and a third manual button. The first manual button is connected to the limit switch by wiring. The second manual button is connected in series with the first manual button, and the third manual button is connected in parallel with the second manual button.
4. A safety interlock device for an electric hoist according to claim 3, characterized in that, The second manual button is a manual button for controlling the lifting of the electric hoist handle.
5. A safety interlock device for an electric hoist according to claim 3, characterized in that, The third manual button is a manual button for controlling the lowering of the electric hoist handle.
6. A safety interlock device for an electric hoist according to any one of claims 1 to 5, characterized in that, The limit switch is a normally open limit switch.