Device for quick replacement of a bridge crane towline trolley

Abstract

The utility model relates to bridge crane technical field, namely a device of quick replacement bridge crane tow rope pulley. It includes a magnetic base, is connected with spiral folding lifting device on the magnetic base, and there is a rope fixing seat above spiral folding lifting device, and the rope fixing seat is connected with the rope of the tow rope of the scoop. Adopt the magnetic base and spiral folding lifting device combination, realize fixed and hoisting, when replacing bridge crane power tow rope pulley, play the role of quick hoisting, quick operation, reduce personnel, shorten the repair time, reduce the labor intensity. The crane tow rope pulley wheel can be replaced after the reform 1-2 people can be realized, and simultaneously can ensure that the repair work is completed within 25 minutes. That is, the manpower investment is reduced, the labor intensity of maintenance personnel is greatly reduced, and the safety of personnel and equipment is ensured.

Description

Technical Field

[0001] This utility model relates to the field of bridge crane technology, specifically a device for quickly changing the cable trolley of a bridge crane. Background Technology

[0002] In existing technology, the main function of the cable trolley for bridge cranes is to guide and support the cable, ensuring its stable movement during crane operation and preventing problems such as entanglement, pulling, and wear. The cable trolley generally consists of a trolley body, pulleys, axles, and bearings. The installation position of the cable trolley for large cranes is generally more than 2 meters above the ground level. Because the cable itself can weigh hundreds of kilograms, the excessive weight makes it impossible to disassemble and repair the cable trolley under its pressure. Before the modification, when the crane's power cable pulley needed repair or replacement due to damage, bearing seizure, or other malfunctions, the method used was, if the production site allowed, to position and stop the crane, find a suitable hanging point above the pulley to be replaced, suspend a hand-operated hoist, and use the hoist to lift the pulley for operation. If the crane could not be positioned and stopped due to production or other reasons, or if there was no suitable location to suspend a hand-operated hoist around the pulley to be replaced, then 3-5 people needed to climb to a suitable position using a ladder, and manually lift the cable pulley to reduce the weight of the cable, ensuring that the repair and replacement of the pulley could be completed normally (see...). Figure 4 Moreover, whether using a hand-operated hoist or manual lifting, there are unfavorable factors that hinder safe production, such as working at heights, climbing ladders, and requiring multiple people to cooperate. Utility Model Content

[0003] The purpose of this invention is to provide a device for quickly replacing the cable trolley of a bridge crane that is structurally reasonable, time-saving, labor-saving, safe, and convenient, in order to address the above-mentioned shortcomings.

[0004] The technical solution of this utility model is: a device for quickly changing the towing cable trolley of a bridge crane, characterized in that it includes a magnetic base, a spiral folding lifting device connected to the magnetic base, a rope fixing seat above the spiral folding lifting device, and a rope for catching the towing cable connected to the rope fixing seat.

[0005] The above plan also includes: The spiral folding lifting device is a four-bar linkage mechanism, with an adjusting screw connecting the hinged ends of the upper two bars and the lower two bars.

[0006] The rope is a double-eared chain.

[0007] The advantages of this utility model are: 1. It combines a magnetic base with a spiral folding lifting device to achieve fixing and hoisting, enabling rapid hoisting, quick operation, reduced personnel, shorter maintenance time, and reduced labor intensity when replacing the power cable trolley of a bridge crane. 2. The investment cost is extremely low, and no modification to the crane cable trolley or traveling device is required. 3. After the modification, replacing the crane cable trolley wheel can be done by 1-2 people, and the maintenance work can be completed within 25 minutes. This reduces manpower input and greatly reduces the labor intensity of maintenance personnel. 4. It eliminates the need to climb and hang hand-operated hoists or manually lift the cable, shortening maintenance time while ensuring the safety of personnel and equipment.

[0008] The embodiments of this utility model will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0009] Figure 1 This is a simplified structural diagram of the present invention.

[0010] Figure 2 This is a simplified diagram of the rope fixing seat and rope connection structure.

[0011] Figure 3 This is a simplified diagram of the usage status reference structure.

[0012] Figure 4 This is a simplified diagram of the reference structure before the improvement.

[0013] The components in the diagram are as follows: Magnetic base 1, spiral folding lifting device 2, rope fixing seat 3, rope 4, adjusting screw 5, magnetic base switch 6, connecting seat 7, connecting bolt 8, double ear pin 9, bolt 10, trolley guide rail 11, towing cable trolley 12, towing cable 13. Detailed Implementation

[0014] See Figure 1-3 A device for quickly changing the towing cable trolley of a bridge crane includes a magnetic base 1 with a magnetic base switch 6. A spiral folding lifting device 2 is connected to the magnetic base 1 via a connecting seat 7 and a connecting bolt 8. The spiral folding lifting device 2 is a four-bar linkage, with adjusting screws 5 connecting the hinged ends of the upper two bars and the lower two bars. Above the spiral folding lifting device 2 is a rope fixing seat 3, to which a rope 4 for carrying the towing cable is connected. The rope 4 is a double-eared chain, approximately 1.5 meters long. One end of the rope 4 is connected to the rope fixing seat 3 via a double-eared pin 9, and the other end is connected to the rope fixing seat 3 via an adjusting bolt 10.

[0015] When replacing the cable trolley 12, the modified device is placed above the trolley guide rail 11 to be repaired. The spiral folding lifting device 2 is used to minimize the weight of the cable 13 falling and lift the cable trolley 12 to a reasonable height for repair.

[0016] The components in the diagram are as follows: Magnetic base 1, spiral folding lifting device 2, rope fixing seat 3, rope 4, adjusting screw 5, magnetic base switch 6, connecting seat 7, connecting bolt 8, pin 9, adjusting bolt 10, trolley guide rail 11, towing cable trolley 12, towing cable 13.

[0017] Working principle: When replacing the pulley wheel, place this device on top of the pulley guide rail 11 (I-beam) to be replaced, turn on the magnetic base switch 6, and firmly attach the spiral folding lifting device 2 to the plane above the pulley guide rail 11 to ensure that the spiral folding lifting device 2 will not tilt, tip over, or move during maintenance. After attachment, adjust the spiral folding lifting device 2 to its lowest position, pass the non-fixed end of the rope 4 through the bottom of the cable pulley 12, and loop it around the cable pulley 12. Adjust the rope 4 to the required length at the top of the spiral folding lifting device 2 according to the actual length on site. Then, use the double-ear pins 9 on both sides of the rope 4 to fix the rope 4 in the groove machined on the top of the spiral folding lifting device 2, easily completing the chain length adjustment to meet the usage conditions in different working environments. After adjusting and fixing the rope 4, the adjusting screw 5 of the spiral folding lifting device 2 is rotated to lift the spiral folding lifting device 2 upward, which drives the rope 4 to lift the towing cable trolley 12, eliminating the influence of the weight of the towing cable 13, thereby making it easy to carry out maintenance work on the towing cable trolley 12.

[0018] The above description is merely a specific embodiment of this utility model, and the various examples do not constitute a limitation on the substantive content of this utility model.

Claims

1. A device for quickly changing the cable trolley of a bridge crane, characterized in that... It includes a magnetic base (1), a spiral folding lifting device (2) connected to the magnetic base (1), a rope fixing seat (3) above the spiral folding lifting device (2), and a rope (4) for carrying and towing connected to the rope fixing seat (3).

2. The device for quickly changing the cable trolley of a bridge crane according to claim 1, characterized in that... The spiral folding lifting device (2) is a four-bar linkage mechanism, with an adjusting screw (5) connecting the hinged ends of the upper two bars and the lower two bars.

3. A device for quickly changing the cable trolley of a bridge crane according to claim 1 or 2, characterized in that... The rope (4) is a double-eared chain.

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