Hydraulic magnetic lifting appliance for steel raw materials

Abstract

The utility model relates to a steel raw material hydraulic magnetic lifting appliance, which comprises a lower suction seat, an oil-way cylinder body, a positioning seat, a magnetic conductive ring, a fixed permanent magnet and a movable permanent magnet, the lower suction seat and the oil-way cylinder body are coaxially positioned through a bolt and are screwed and locked, and a non-magnetic conductive material is filled between the outer side wall of the lower suction seat and the inner side wall of the lower end face of the oil-way cylinder body. An oil supply connector and a plurality of lifting rings in an annular array are arranged at the upper end of the oil way cylinder body, the oil supply connector is communicated with a high-pressure oil way arranged in the oil way cylinder body, and the high-pressure oil way is communicated to boosting oil cavities of all the movable permanent magnets. The magnetic attraction force of the lifting appliance is increased, the lifting load can be increased, a high-pressure oil way is matched, synchronous and same-pressure oil way transmission control is carried out on all the movable permanent magnets, it is guaranteed that the two permanent magnets can be homopolar on the same side or heteropolar on the same side, and therefore the steel raw materials magnetically attracted by the lower attraction base are attracted and released.

Description

Technical Field

[0001] The utility model relates to the technical field of hoisting equipment, in particular to a hydraulic magnetic lifting device for steel raw materials. Background Art

[0002] Magnetic lifters are often needed in steel mills. In order to grab steel raw materials and place them in the smelting boiler, and to remove more non-steel and non-iron impurities from entering the smelting boiler, magnetic lifters are usually used to absorb and transport steel raw materials or steel raw materials. The magnetic attraction of traditional magnetic lifters is insufficient, and the weight and quantity of the fragmented steel raw materials or steel raw materials that can be absorbed are relatively small. In addition, the control device of the internal permanent magnet mostly uses a motor or a servo to implement rotation control. In the event of a sudden disconnection of the power supply, it is easy to cause a production safety accident. The steel that has been absorbed and emptied is easy to fall, or the absorption state is maintained and the raw materials cannot be released. Therefore, it is necessary to change the control structure of the permanent magnet to ensure that the control process of the magnetic lifter is safe and reliable, and to improve the magnetic attraction strength of the magnetic lifter to increase the lifting weight. Utility Model Content

[0003] The purpose of the utility model is to provide a method for improving the adsorption force of the existing magnetic hanger, and to design a new permanent magnet motion control mechanism, adopt a hydraulic transmission control system to drive all permanent magnets to rotate synchronously, control the magnetic internal circulation or external circulation of the hanger, and realize the adsorption and grasping of the steel raw materials below, thereby greatly improving the practicality.

[0004] To achieve the above purpose, the utility model provides the following technical solutions: a hydraulic magnetic lifting device for steel raw materials, comprising a lower suction seat, an oil circuit cylinder, a positioning seat and a magnetic guide ring, and fixed permanent magnets and movable permanent magnets arranged in an annular array,

[0005] The lower suction seat is coaxially positioned with the oil circuit cylinder body by bolts and screwed and locked. The outer wall of the lower suction seat and the inner wall of the lower end face of the oil circuit cylinder body are filled with non-magnetic conductive material to seal and protect the movable permanent magnet.

[0006] The upper end of the oil circuit cylinder body is provided with an oil supply interface and a plurality of rings in an annular array, the oil supply interface is connected to the high-pressure oil circuit arranged in the oil circuit cylinder body, the high-pressure oil circuit is annular, and a diversion oil channel is provided to connect to the booster oil chamber of all active permanent magnets, the inner side wall of the upper end of the oil circuit cylinder body is provided with a plurality of positioning grooves, and fixed permanent magnets are placed in the positioning grooves, and the N pole and S pole of the fixed permanent magnet are distributed on the inner and outer sides, and the inner side wall of the lower end of the oil circuit cylinder body is provided with a plurality of upper semi-cylindrical grooves, the upper semi-circular A booster oil chamber is arranged in the middle of the column groove, and the booster oil chamber is communicated with the diverter oil channel, and a push block arranged on the outer wall of the cylindrical movable permanent magnet is embedded in the booster oil chamber, so that the push block is pushed in the booster oil chamber under the push of the high-pressure oil, and a positioning shaft is sleeved on the axis of the cylindrical movable permanent magnet. During the movement of the push block, the movable permanent magnet is driven to rotate 180 degrees stably about the axis. When the high-pressure oil is withdrawn, the push block is reset, and the movable permanent magnet is also reset. The N pole and S pole of the movable permanent magnet are distributed on both sides of the axis.

[0007] Furthermore, the positioning seat limits and presses the fixed permanent magnet that has been positioned and locked by bolts. A magnetic ring is coaxially arranged on the outer periphery of the positioning seat, and the magnetic ring is connected to the oil circuit cylinder body by bolts.

[0008] Furthermore, a lower semi-cylindrical groove is provided below the positioning seat and the magnetic conductive ring directly opposite to the movable permanent magnet, and the lower semi-cylindrical groove cooperates with the upper semi-cylindrical groove to form a rotating space for the movable permanent magnet.

[0009] Furthermore, each upper semi-cylindrical groove is arranged directly below the positioning groove to ensure that the magnetic adsorption force of the outer circulation of the magnetic field is uniform and controllable.

[0010] Furthermore, a sealing component is provided between the oil circuit cylinder body and the lower suction seat to ensure that no oil leakage occurs around the movable permanent magnet.

[0011] Compared with the prior art, the utility model adopts the above technical solution and has the following technical effects:

[0012] The hydraulic magnetic lifting device for steel raw materials utilizes multiple groups of fixed permanent magnets and movable permanent magnets arranged in a circular array to increase the magnetic attraction force of the magnetic lifting device, thereby increasing the lifting load. In addition, in conjunction with the high-pressure oil circuit, synchronous and equal-pressure oil circuit transmission control is implemented on all movable permanent magnets to ensure that the two permanent magnets can achieve the same pole on the same side or different poles on the same side, thereby realizing the suction and release action of the steel raw materials magnetically attracted by the lower suction seat, which is practical and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a side view of the hydraulic magnetic lifting device for steel raw materials in this embodiment;

[0014] Figure 2This is a side view of the hydraulic magnetic lifting device for steel raw materials in this embodiment;

[0015] Figure 3 This is a cross-sectional view of the hydraulic magnetic lifting device for steel raw materials in this embodiment;

[0016] Figure 4 for Figure 3 A partial enlarged view of the middle A;

[0017] Figure 5 This is a top view schematic diagram of the hydraulic magnetic lifting device for steel raw materials in this embodiment;

[0018] Among them: 1-oil cylinder block, 2-reinforcement ring, 3-lifting ring, 4-positioning seat, 5-oil supply pipe, 6-oil supply interface, 7-magnetic ring, 8-lower suction seat, 9-non-magnetic material, 10-fixed permanent magnet, 11-bolt, 12-high-pressure oil circuit, 13-movable permanent magnet, 14-push block, 15-boost oil chamber, 16-positioning shaft. DETAILED DESCRIPTION

[0019] The technical solution of the present utility model will be described clearly and completely in the following in conjunction with the accompanying drawings in the form of embodiments.

[0020] See also Figures 1 to 5 The present embodiment provides a hydraulic magnetic lifting device for steel raw materials, comprising a lower suction seat 8, an oil circuit cylinder 1, a positioning seat 4 and a magnetic ring 7, and 6 groups of fixed permanent magnets 10 and movable permanent magnets 13 arranged in a circular array.

[0021] See also Figure 3 The lower suction seat 8 is coaxially positioned with the oil circuit cylinder body 1 through a bolt 11 and screwed and locked. The outer wall of the lower suction seat 8 and the inner wall of the lower end face of the oil circuit cylinder body 1 are filled with non-magnetic material 9 to seal and protect the active permanent magnet 13. The upper end of the oil circuit cylinder body 1 is provided with an oil supply interface 6 and three rings 3 in an annular array. The oil supply interface 6 is connected to the high-pressure oil circuit 12 set in the oil circuit cylinder body 1. Figure 5 The high-pressure oil circuit 12 is annular and is provided with a bypass oil channel connected to the booster oil chamber 15 of all active permanent magnets 13. The inner side wall of the upper end of the oil circuit cylinder body 1 is provided with 6 positioning grooves, and the fixed permanent magnets 10 are placed in the positioning grooves. The N pole and S pole of the fixed permanent magnet 10 are distributed on the inner and outer sides.

[0022] See also Figure 3, the inner side wall of the lower end of the oil circuit cylinder body 1 is provided with 6 upper semi-cylindrical grooves, and the middle part of the upper semi-cylindrical groove is provided with a boosting oil chamber 15, the boosting oil chamber 15 is communicated with the diversion oil passage, and the push block 14 provided on the outer wall of the cylindrical movable permanent magnet 13 is embedded in the boosting oil chamber 15, so that the push block 14 is pushed in the boosting oil chamber 15 under the push of the high-pressure oil, and the axis of the cylindrical movable permanent magnet 13 is sleeved with a positioning shaft 16, see Figure 3 .

[0023] The working principle is: during the movement of the push block 14, the movable permanent magnet 13 is driven to rotate 180 degrees stably along the axis. When the high-pressure oil is withdrawn, the push block 14 is reset, and the movable permanent magnet 13 is also reset. The N pole and S pole of the movable permanent magnet 13 are distributed on both sides of the axis.

[0024] See also Figure 3 The positioning seat 4 limits and presses the fixed permanent magnet 10 that has been positioned and is screwed and locked by bolts 11. A magnetic ring 7 is coaxially arranged on the outer periphery of the positioning seat 4, and the magnetic ring 7 is connected to the oil circuit cylinder body 1 by bolts 11.

[0025] See also Figure 3 A lower semi-cylindrical groove is provided below the positioning seat 4 and the magnetic conductive ring 7 directly opposite to the movable permanent magnet 13 , and the lower semi-cylindrical groove cooperates with the upper semi-cylindrical groove to form a rotating space for the movable permanent magnet 13 .

[0026] See also Figure 3 and Figure 5 Each upper semi-cylindrical groove is arranged directly below the positioning groove to ensure that the magnetic adsorption force of the outer circulation of the magnetic field is uniform and controllable.

[0027] A further implementation scheme is that a sealing component is provided between the oil circuit cylinder body 1 and the lower suction seat 8 to seal the high-pressure oil around the movable permanent magnet 13 to ensure that no oil leakage occurs around the movable permanent magnet 13 .

[0028] The above describes in detail the implementation modes of the present invention in conjunction with the accompanying drawings, but the present invention is not limited to the above implementation modes. Various changes, modifications, substitutions and variations can be made within the knowledge scope of ordinary technicians in the field without departing from the purpose of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A hydraulic magnetic hanger for steel raw materials, characterized by: It comprises a lower suction seat (8), an oil circuit cylinder body (1), a positioning seat (4), a magnetic conductive ring (7), and a fixed permanent magnet (10) and a movable permanent magnet (13) arranged in an annular array. The lower suction seat (8) is coaxially positioned with the oil circuit cylinder body (1) by means of bolts (11) and screwed and locked, and a non-magnetic material (9) is filled between the outer wall of the lower suction seat (8) and the inner wall of the lower end surface of the oil circuit cylinder body (1). The upper end of the oil circuit cylinder body (1) is provided with an oil supply interface (6) and a plurality of rings (3) in an annular array. The oil supply interface (6) is connected to a high-pressure oil circuit (12) provided in the oil circuit cylinder body (1). The high-pressure oil circuit (12) is annular and is provided with a bypass oil passage connected to the booster oil chambers (15) of all the active permanent magnets (13). The inner side wall of the upper end of the oil circuit cylinder body (1) is provided with a plurality of positioning grooves. Fixed permanent magnets (10) are placed in the positioning grooves. The N pole and the S pole of the fixed permanent magnet (10) are distributed on both sides. The inner side wall of the lower end of the oil circuit cylinder body (1) is provided with a plurality of upper semi-cylindrical grooves. A booster oil chamber (15) is provided in the middle of the upper semi-cylindrical groove. The booster oil chamber (15) is connected to the bypass oil passage, and a push block (14) provided on the outer wall of the cylindrical active permanent magnet (13) is embedded in the booster oil chamber (15).

2. The hydraulic magnetic lifting device for steel raw materials according to claim 1 is characterized in that: The push block (14) is pushed in the booster oil chamber (15) by the high-pressure oil. During the movement of the push block (14), the movable permanent magnet (13) is driven to rotate stably 180 degrees about the axis. When the high-pressure oil is withdrawn, the push block (14) is reset and the movable permanent magnet (13) is also reset. The N pole and S pole of the movable permanent magnet (13) are distributed on both sides of the axis.

3. The hydraulic magnetic hanger for steel raw materials according to claim 1 is characterized in that: The axis of the movable permanent magnet (13) is sleeved with a positioning shaft (16).

4. The hydraulic magnetic lifting device for steel raw materials according to claim 1 is characterized in that: The positioning seat (4) limits and presses the fixed permanent magnet (10) that has been positioned and is screwed and locked by bolts (11). A magnetic ring (7) is coaxially arranged on the outer periphery of the positioning seat (4), and the magnetic ring (7) is connected to the oil circuit cylinder body (1) by bolts (11).

5. The hydraulic magnetic lifting device for steel raw materials according to claim 1 is characterized in that: The positioning seat (4) and the magnetic conductive ring (7) are provided with a lower semi-cylindrical groove directly below the movable permanent magnet (13), and the lower semi-cylindrical groove cooperates with the upper semi-cylindrical groove to form a rotating space for the movable permanent magnet (13).

6. The hydraulic magnetic lifting device for steel raw materials according to claim 1 is characterized in that: Each upper semi-cylindrical groove is arranged directly below the positioning groove.

7. The hydraulic magnetic lifting device for steel raw materials according to claim 1 is characterized in that: A sealing assembly is provided between the oil circuit cylinder body (1) and the lower suction seat (8).

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