一种皮带防护网安全联锁装置
By installing a limit switch at the bottom of the protective net and connecting it to the conveyor belt, the conveyor belt can be automatically stopped after the protective net is removed, thanks to the synergistic effect of the return spring and the contact spring. This solves the problem of the inability to automatically stop the conveyor belt in the existing technology, and improves safety and accident prevention efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CANGZHOU LINGANG JINYU CEMENT CO LTD
- Filing Date
- 2025-09-20
- Publication Date
- 2026-07-17
AI Technical Summary
The existing belt conveyor safety nets cannot automatically stop the machine when the nets are removed, leading to accidents that could cause injuries to people on the belt conveyor and affecting equipment safety.
Limit switches are installed at the bottom of the protective netting and connected to the head of the conveyor belt via wires to enable automatic shutdown when the protective netting is removed. Return springs and contact springs ensure a rapid response and cut off the circuit.
The system automatically stops the conveyor belt after the protective netting is removed, preventing safety accidents caused by violations of operating procedures and improving equipment safety and accident prevention efficiency.
Smart Images
Figure CN224512354U_ABST
Abstract
Claims
1. A safety interlock device for a belt conveyor safety net, comprising a limit switch (12) installed between the safety net body (13) and the conveyor belt, used to shut down the conveyor belt in conjunction with the removal of the safety net body (13), characterized in that: The limit switch (12) includes a push rod (1), a limit contact (2), a normally closed contact (3), and a conductor iron sheet (6). The push rod (1) is movably installed in a movable slot on the mounting box, and the bottom of the push rod (1) is snapped onto a support column (14). The two ends of the conductor iron sheet (6) are movably installed on the support column (14) through corresponding contact springs (4). The limit contact (2) and the normally closed contact (3) are arranged vertically at intervals on the conductor iron sheet. 6) The upper and lower ends, and the travel of the conductor iron piece (6) between the limiting contact (2) and the normally closed contact (3) matches the travel of the push rod (1), so that the installation and removal of the protective net body (13) pushes the push rod (1) to move vertically along the moving groove, thereby pushing the conductor iron piece (6) to move vertically and abut against the normally closed contact (3) or the limiting contact (2) respectively, thereby connecting or disconnecting the circuit of the conveyor belt.
2. A belt guard safety interlock according to claim 1, characterised in that: A restoring spring (5) is fitted at the bottom of the support column (14).
3. A belt guard interlock according to claim 1, wherein: The push rod (1) is equipped with a protective net pressure plate (8) at the top, and the protective net pressure plate (8) abuts against the bottom of the protective net body (13).
4. A belt guard interlock according to claim 1, wherein: The limit switch (12) is mounted on the belt support base frame (10) by fixing the iron plate (9) on the base.
5. A belt guard interlock according to claim 1, wherein: The limit switch (12) is connected to the head of the conveyor belt via a wire (7).
6. A belt guard interlock according to claim 1 wherein: The bottom of the protective net body (13) is installed on the belt support base frame (10) by connecting bolts (11).