A device for preventing reverse winding of wire rope in the lifting and closing drum of a grab crane.

Abstract

This utility model discloses a device for preventing reverse winding of the wire rope on a grab bucket crane's lifting and closing drum. The device includes four columns, each with a fixed base bolted to its lower end. The fixed base is welded and fixed to the trolley's base plate. Two columns on the left have horizontal angle iron connecting rods hinged to their top ends, pointing towards the drum. These connecting rods can rotate in the vertical plane. A horizontal rubber connecting rod connects the ends of the two angle iron connecting rods, parallel to the drum and directly above its axis. A bracket is also provided on the upper part of the column, located below the angle iron connecting rods. A trigger screw is installed near the column on each angle iron connecting rod, and a contact limit switch is installed on the bracket directly below the trigger screw, with the lower end of the trigger screw close to the contact limit switch. An adjusting screw is installed on the side of the angle iron connecting rod furthest from the column, with its lower end close to the bracket. Adjusting the length of the adjusting screw ensures that the wire rope on the drum does not come into contact during normal operation.

Description

Technical Field

[0001] This utility model belongs to the field of hoisting equipment technology, specifically relating to crane equipment, and more specifically to a device for preventing reverse winding of wire rope in the hoisting and closing drum of a grab crane. Background Technology

[0002] The top-blown furnace employs an oxygen-enriched nickel smelting process, specifically an oxygen-enriched top-blown immersion lance smelting process. The grab crane primarily handles the grabbing and unloading of materials before they enter the furnace, ensuring the correct material ratio. To improve the stable operation of the grab crane, it is necessary to address the issue of wire rope slippage and reverse winding caused by poor coordination between lifting and opening / closing during operation, which can lead to safety hazards. To overcome this deficiency, this invention designs a corresponding protective device. Utility Model Content

[0003] This utility model provides a device for preventing the wire rope of a grab crane from rewinding during lifting and closing. The purpose is to solve the problem of wire rope jumping off the groove and rewinding caused by poor coordination between lifting and opening / closing during the operation of the grab crane.

[0004] Therefore, the present invention adopts the following technical solution:

[0005] A device for preventing reverse winding of wire rope in the lifting and closing drum of a grab crane includes a fixed base, a column, and angle iron connecting rods and rubber connecting rods.

[0006] The system comprises four columns: two on the left side of the drum and two on the right side, arranged in a rectangular pattern. Each column has a fixed base bolted to its lower end, which is welded to the trolley's base plate. The tops of the two left-side columns are hinged with horizontal angle iron rods pointing towards the drum. These rods can rotate vertically. A horizontal rubber rod connects the ends of the two angle iron rods, parallel to the drum and directly above its axis. Both ends of the rubber rod are connected to the angle iron rods via pins.

[0007] The upper part of the column is also equipped with a bracket, which is located below the angle iron connecting rod. A trigger screw is installed on the angle iron connecting rod near the column, and a contact limit switch is installed on the bracket directly below the trigger screw. The lower end of the trigger screw is close to the contact limit switch. An adjusting screw is installed on the side of the angle iron connecting rod away from the column, with the lower end of the adjusting screw close to the bracket. Adjusting the length of the adjusting screw ensures that the wire rope on the drum does not make contact during normal operation.

[0008] The beneficial effect of this utility model is that when the wire rope reverses during the operation of the drum wire rope, the rubber connecting rod and the angle iron connecting rod will be lifted, which will trigger the contact limit switch to play a role in stopping and protecting the machine. Attached Figure Description

[0009] Figure 1 This is a structural front view of the present invention;

[0010] Figure 2 This is a left view of the structure of this utility model;

[0011] Figure 3 This is a top view of the structure of this utility model;

[0012] In the diagram: 1-Column, 2-Bracket, 3-Angle iron connecting rod, 4-Rubber connecting rod, 5-Contact limit switch, 6-Trigger screw, 7-Adjusting screw, 8-Drum. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0014] like Figure 1-3 As shown, a device for preventing reverse winding of wire rope in the lifting and closing drum 8 of a grab crane includes a fixed base, a column 1, an angle iron connecting rod 3, and a rubber connecting rod 4.

[0015] The column 1 comprises four columns: two columns 1 are located on the left side of the drum 8, and two columns 1 are located on the right side of the drum 8, forming a rectangular distribution. The lower end of each column 1 is bolted to a fixed base, which is welded and fixed to the trolley base plate. The top ends of the two left columns 1 are respectively hinged with horizontal angle iron rods 3, which point towards the drum 8 and can rotate in the vertical plane. A horizontal rubber rod 4 connects the ends of the two angle iron rods 3, parallel to the drum 8 and directly above its axis. Both ends of the rubber rod 4 are connected to the angle iron rods 3 via pins.

[0016] The upper part of the column 1 is also equipped with a bracket 2, which is located below the angle iron connecting rod 3. A trigger screw 6 is installed on the angle iron connecting rod 3 near the column 1. A contact limit switch 5 is installed on the bracket 2 directly below the trigger screw 6, and the lower end of the trigger screw 6 is close to the contact limit switch 5. An adjusting screw 7 is installed on the side of the angle iron connecting rod 3 away from the column 1. The lower end of the adjusting screw 7 is close to the bracket 2. Adjusting the length of the adjusting screw 7 ensures that the wire rope of the drum 8 does not come into contact during normal operation.

[0017] When the wire rope of drum 8 reverses during operation, the rubber connecting rod 4 and the angle iron connecting rod 3 will be lifted. When lifted, the limit positioning bolt on the angle iron connecting rod 3 will trigger the contact limit switch 5 to play a role in stopping protection.

Claims

1. A device for preventing reverse winding of a hoist, closed drum steel wire rope of a grab crane, characterized in that, Includes a fixed base, a column (1), an angle iron connecting rod (3), and a rubber connecting rod (4); The column (1) includes four columns, two columns (1) are located on the left side of the drum (8) and two columns (1) are located on the right side of the drum (8). The four columns (1) are arranged in a rectangular shape. The lower end of the column (1) is connected to a fixed base by bolts. The fixed base is welded and fixed to the bottom plate of the trolley. The top of the two columns (1) on the left side are respectively hinged with horizontal angle iron connecting rods (3). The angle iron connecting rods (3) point in the direction of the drum (8). The angle iron connecting rods (3) can rotate in the vertical plane. The head ends of the two angle iron connecting rods (3) are connected with horizontal rubber connecting rods (4). The rubber connecting rods (4) are parallel to the drum (8) and located directly above the axis of the drum (8). The two ends of the rubber connecting rods (4) are connected to the angle iron connecting rods (3) by pins. The column (1) is also equipped with a bracket (2) at the top, which is located below the angle iron connecting rod (3); a trigger screw (6) is installed on the angle iron connecting rod (3) near the column (1), and a contact limit switch (5) is installed on the bracket (2) directly below the trigger screw (6), with the lower end of the trigger screw (6) close to the contact limit switch (5); an adjusting screw (7) is installed on the side of the angle iron connecting rod (3) away from the column (1), with the lower end of the adjusting screw (7) close to the bracket (2), and the length of the adjusting screw (7) is adjusted to ensure that the wire rope of the drum (8) does not come into contact during normal operation.

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