龙门吊地锚限位连锁装置
By introducing an interlocking mechanism of connecting rods, elastic reset components, and limit switches into the ground anchor device of the gantry crane, the safety hazards caused by incomplete ground anchor unlocking are solved, and the interlocking control between the ground anchor and the crane power supply is realized, thereby improving the safety and reliability of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU CHANGBAO JINGTE STEEL PIPE CO
- Filing Date
- 2025-08-15
- Publication Date
- 2026-07-17
AI Technical Summary
The existing gantry crane ground anchor device lacks an effective interlocking mechanism, which may lead to the crane starting before the ground anchor is fully unlocked due to operational negligence, posing a safety hazard.
Design a ground anchor limit interlock device for gantry cranes. Through the combination of connecting rod, elastic reset component, baffle and limit switch, the ground anchor state and the crane power supply are interlocked to ensure that the crane can be powered on and started when the ground anchor is fully open.
This effectively prevents forced start-up of the crane due to human error, prevents the ground anchor from breaking or damaging the crane structure, and improves the safety and reliability of equipment operation.
Smart Images
Figure CN224513050U_ABST
Abstract
Claims
1. A gantry crane ground anchor limiting interlocking device, installed at a ground anchor chain hanging point of a gantry crane body, characterized in that, include: Linkage (2), which is slidably mounted on the gantry crane body in the vertical direction, and a limiting ring (21) is provided at the upper end of the link (2); The elastic reset member (3) is sleeved on the connecting rod (2), with the upper end of the elastic reset member (3) abutting the limiting ring (21) and the lower end abutting the gantry crane body; Baffle (4), which is fixedly connected to the lower end of the connecting rod (2); Limit switch (5), the limit switch (5) is fixedly installed on the gantry crane body, the limit switch (5) is provided with a contact group, the contact group is adapted to be connected in series in the power supply circuit of the gantry crane; The ground anchor chain is adapted to press on the connecting rod (2). The connecting rod (2) has a first position and a second position on the vertical movement path. When the connecting rod (2) moves to the first position, the connecting rod (2) is adapted to drive the baffle to trigger the limit switch (5) to connect the power supply circuit of the gantry crane. When the connecting rod (2) moves to the second position, the connecting rod (2) is adapted to drive the baffle to disengage from the limit switch (5) to disconnect the power supply circuit of the gantry crane.
2. The gantry crane ground anchor limiting interlocking device according to claim 1, characterized in that: The elastic reset element (3) is a compression spring.
3. The gantry crane ground anchor limiting interlocking device according to claim 2, characterized in that: The compression spring is provided with spring seats (32) at both ends.
4. The gantry crane ground anchor limiting interlocking device according to claim 1, characterized in that: It also includes a guide rod (7), which is vertically mounted on the baffle (4) and is adapted to slide vertically along the guide hole inside the gantry crane body.
5. The gantry crane ground anchor limiting interlocking device according to claim 1, characterized in that: The connecting rod (2) is provided with a hook.
6. The gantry crane ground anchor limiting interlocking device according to claim 1, characterized in that: The contact group of the limit switch (5) is normally open.
7. The gantry crane ground anchor limiting interlocking device according to claim 1, characterized in that: The limit switch (5) is provided with a trigger, and the end of the trigger is provided with a roller. The trigger is located on the moving path of the baffle (4).