CN-224226515-U - Multi-functional overhead travelling crane electric wire box stop device

CN224226515UCN 224226515 UCN224226515 UCN 224226515UCN-224226515-U

Abstract

The utility model relates to the technical field of aluminum smelting, in particular to a multifunctional overhead travelling crane wire box limiting device which comprises a cab arranged below an overhead travelling crane girder, a winding mechanism arranged on the side wall of the overhead travelling crane girder, a wire box connected with the winding mechanism and a limiting mechanism arranged on the side wall of the overhead travelling crane girder, wherein the limiting mechanism is matched with the wire box to control the winding mechanism to start and stop. According to the utility model, by the mechanical limiting mechanism, no network signal is needed, and the limiting action can be triggered by physical contact when the network fails, so that the power supply of the motor is directly cut off, the failure shutdown time is reduced, and the electrolytic production continuity is ensured. The limiting mechanism is in sliding connection with the lifting belt through the steel wire rope and the drop hammer, the large-scale transformation of the original winding mechanism of the crown block is not needed, the installation is convenient, and the debugging is simple. The lifting belt system of the existing multifunctional crown block can be directly adapted to form double protection with the original network control, and the original operation logic is not affected.

Inventors

WEI LIANG
LIU YINGQIANG
ZHANG LIBO
BAI JUNSHENG
Xu Bangdong
LIU ZIZHONG
Wan Nianqiang

Assignees

兰州铝业有限公司

Dates

Publication Date: 20260512
Application Date: 20250530

Claims (4)

1. The multifunctional overhead travelling crane wire box limiting device comprises a cab (2) arranged below an overhead travelling crane main beam (1), a winding mechanism arranged on the side wall of the overhead travelling crane main beam, and a wire box (3) connected with the winding mechanism, and is characterized by further comprising a limiting mechanism arranged on the side wall of the overhead travelling crane main beam, wherein the limiting mechanism is matched with the wire box (3) for use in controlling the starting and stopping of the winding mechanism.
2. The limiting device according to claim 1, wherein the lifting mechanism comprises a supporting plate (4) arranged on the side wall of the crane girder (1), a motor (5) arranged on the supporting plate (4), and a winding drum (6) connected with the output shaft of the motor (5), wherein a lifting belt (7) is arranged in the winding drum (6), and the lifting belt (7) is connected with the wire box (3).
3. The limiting device according to claim 1, wherein the limiting mechanism comprises a limiting switch (8) arranged on the supporting plate (4) and a drop hammer (10) connected with a driving head of the limiting switch (8) through a steel wire rope (9), the limiting switch (8) is connected with the motor (5), and the drop hammer (10) is arranged on the lifting belt (7) in a penetrating manner and can slide on the lifting belt (7).
4. A limit device according to claim 3, characterized in that the limit switch (8) is in particular a normally open limit switch.

Description

Multi-functional overhead travelling crane electric wire box stop device Technical Field The utility model relates to the technical field of aluminum smelting, in particular to a multifunctional overhead travelling crane wire box limiting device. Background In the industrial fields of aluminum smelting and the like, the multifunctional crown block is key equipment for electrolytic production, and the wire box lifting system is used for winding and unwinding management of a cable harness. At present, the wire box lifting control of the existing multifunctional crown block generally depends on a network control system of the crown block, and limit signals are transmitted through a network to control the starting and stopping of a lifting motor. However, in the actual running process, when the network fault occurs to the electric wire box, the transmission of the lifting control signal of the electric wire box is interrupted, so that the electric wire box frequently punches the roof due to the loss of limit protection, and serious faults such as burning of a lifting motor, breakage of a steel wire rope, damage of a contactor and the like are caused. And frequent fault shutdown seriously affects the electrolytic production efficiency, and increases the equipment maintenance cost and the production interruption risk. Although some mechanical limiting devices exist in the prior art, most of the mechanical limiting devices are complex in structure, difficult to install and debug, and cannot be effectively compatible with the original lifting system of the crown block, so that the limiting action is difficult to reliably trigger under the network fault scene. Disclosure of utility model The utility model aims to provide a multifunctional overhead travelling crane wire box limiting device which is used for solving the problem that the wire box frequently bounces due to loss of limiting protection caused by interruption of transmission of a wire box lifting control signal in the background art. The multifunctional overhead travelling crane wire box limiting device comprises a cab arranged below an overhead travelling crane girder, a winding mechanism arranged on the side wall of the overhead travelling crane girder, a wire box connected with the winding mechanism, and a limiting mechanism arranged on the side wall of the overhead travelling crane girder, wherein the limiting mechanism is matched with the wire box to control the winding mechanism to start and stop. Further, the winding mechanism comprises a supporting plate arranged on the side wall of the main beam of the crown block, a motor arranged on the supporting plate and a winding drum connected with an output shaft of the motor, wherein a lifting belt is arranged in the winding drum and is connected with the wire box. The limiting mechanism comprises a limiting switch arranged on the supporting plate and a drop hammer connected with a limiting switch driving head through a steel wire rope, wherein the limiting switch is connected with the motor, and the drop hammer is arranged on the lifting belt in a penetrating manner and can slide on the lifting belt. Further, the limit switch is specifically a normally open limit switch. Compared with the prior art, the utility model has the following beneficial effects: 1. According to the utility model, through a mechanical limiting mechanism (drop hammer and limit switch), a network signal is not needed, and the limiting action can be triggered through physical contact when a network fails, so that the power supply of a motor is directly cut off, the failure shutdown time is reduced, and the electrolytic production continuity is ensured. 2. The limiting mechanism is in sliding connection with the lifting belt through the steel wire rope and the drop hammer, the large-scale transformation of the original winding mechanism of the crown block is not needed, the installation is convenient, and the debugging is simple. The lifting belt system of the existing multifunctional crown block can be directly adapted to form double protection with the original network control, and the original operation logic is not affected. Drawings FIG. 1 is a diagram of the overall structure of the present utility model; Fig. 2 is a rear view of the present utility model. In the figure: 1. A main beam of the crown block; 2, a cab, 3, a wire box, 4, a supporting plate, 5, a motor, 6, a winding drum, 7, a lifting belt, 8, a limit switch, 9, a wire rope and 10, and a drop hammer. Detailed Description Referring to fig. 1 to 2, a multifunctional overhead travelling crane wire box limiting device is composed of a cab 2 arranged below an overhead travelling crane girder 1, a winding mechanism arranged on the side wall of the overhead travelling crane girder, a wire box 3 connected with the winding mechanism, and a limiting mechanism arranged on the side wall of the overhead travelling crane girder. The wire box 3 is driven to be lifted to a proper po