A kind of electromagnetic chuck for overhead crane used for scrap steel

Abstract

The utility model relates to an electromagnetic chuck for a crane used for scrap steel, and belongs to the technical field of electromagnetic chucks. It includes an electromagnetic chuck body, an automatic reeling mechanism and a reeling disc. A control box is fixedly connected to the front side of the upper surface of the electromagnetic chuck body. The automatic reeling mechanism is connected to the upper surface of the electromagnetic chuck body and is located on one side of the control box. The automatic reeling mechanism includes a fixed seat. Through the arrangement of the automatic reeling mechanism and the reeling disc, it can be ensured that the cable 2 is always in a stretched state, which effectively reduces the amplitude of the shaking of the cable 2, reduces the possibility of its failure, and reduces the number of cable replacements and the number of electromagnetic chuck maintenance times; when the electromagnetic chuck body is placed on the ground or sucks scrap steel, the secondary winding drum will drive the reeling disc to reel in the remaining cable 2, effectively storing the cable 2 in real time, avoiding the problem of entanglement or damage caused by the contact between the cable 2 and the scrap steel, and greatly reducing the failure rate of the electromagnetic chuck body.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic suckers, in particular to an electromagnetic sucker for a crane used for scrap steel. Background Art

[0002] The electromagnetic chuck for scrap steel overhead crane is a device used in scrap steel lifting operations. It uses the electromagnetic principle to generate a strong suction force to achieve the lifting operation of scrap steel. This electromagnetic chuck is mainly composed of three parts: iron core, coil and power supply. The iron core is usually made of materials with high magnetic permeability, such as silicon steel sheets, which have good magnetic conductivity; the coil is wound with copper wire, which can conduct current to generate a magnetic field; and the power supply provides the necessary electrical energy for the electromagnetic chuck, usually using a DC power supply, and adjusts the strength of the suction by controlling the current.

[0003] The existing electromagnetic chuck for overhead crane for scrap steel may swing during operation due to various reasons. A control box is installed on the upper end of the electromagnetic chuck, and the control box is connected to an external controller through a cable. However, the existing technology does not provide additional protection for the cable. Therefore, when the electromagnetic chuck swings, the cable will also shake.

[0004] Under frequent shaking, the cable is very likely to malfunction; in addition, when the electromagnetic suction cup is placed on the ground or sucking up scrap steel, the hanging chain of the electromagnetic suction cup will change from a stretched state to a relaxed state, and the cable will also relax and protrude. The protruding cable is very likely to get entangled with the scrap steel, or collide with the scrap steel, causing cable damage, which not only requires frequent cable replacement, but also increases the failure rate of the electromagnetic suction cup. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides an electromagnetic chuck for a scrap steel crane. The technical solution of the utility model is as follows:

[0006] An electromagnetic chuck for a crane for scrap steel comprises an electromagnetic chuck body, an automatic winding mechanism and a winding disk, three sets of hanging ears are welded at equal intervals on the upper surface of the electromagnetic chuck body, a shaft rod is fixedly connected to the inside of the hanging ears, a hanging chain is sleeved on the outer side of the shaft rod, a control box is fixedly connected to the front side of the upper surface of the electromagnetic chuck body, a cable 1 is connected to the upper surface of the control box, a clamping block is sleeved on the outer side of the cable 1, a conductive slip ring is connected to the upper end of the cable 1, the automatic winding mechanism is connected to the upper surface of the electromagnetic chuck body and is located on one side of the control box, the automatic winding mechanism comprises a fixed seat, the fixed seat is fixedly connected to the upper surface of the electromagnetic chuck body, the upper surface of the fixed seat is fixedly connected to a support seat, the front side of the support seat rotates A main winding drum is connected, a constant force spring steel sheet is wound on the outside of the main winding drum, and one end of the constant force spring steel sheet is fixedly connected to the main winding drum, a secondary winding drum is rotatably connected to the front side of the support seat and located on one side of the main winding drum, and the other end of the constant force spring steel sheet is fixedly connected to the secondary winding drum, the winding drum is fixedly connected to the front side of the secondary winding drum, a cable 2 is wound on the inside of the winding drum, and one end of the cable 2 is connected to a conductive slip ring, a right-angle guide frame for limiting the sliding path of the cable 2 is welded on the upper surface of the support seat, a clamping seat is installed with the front side bolts of the right-angle guide frame, and the clamping seat and the right-angle guide frame are closed to form a wire groove for providing a guide function for the cable 2, and the diameter of the cable 2 is smaller than the diameter of the wire groove.

[0007] Optionally, the clamping block includes a support plate, a fixed clamping block, a movable clamping block and a fixing bolt, the support plate is fixedly connected to the upper surface of the control box, the fixed clamping block is fixedly connected to the front side of the support plate, the movable clamping block is movably connected to the front side of the fixed clamping block, the fixing bolts fix the movable clamping block to the fixed clamping block, and the upper surface of the support plate is fixedly connected with a placement slot for installing a conductive slip ring.

[0008] Optionally, a clamping pad 1 is bonded to the inner side of the fixed clamping block, a clamping pad 2 is bonded to the inner side of the movable clamping block, and the clamping pad 1 and the clamping pad 2 are respectively attached to the two sides of the cable 1.

[0009] Optionally, slots are provided on both sides of the fixed clamp block, and connecting holes are provided on the inner walls of the slots, plug blocks are welded on both sides of the movable clamp block, and the plug blocks are inserted into the slots on the corresponding side, and mounting holes are provided through the side walls of the plug blocks, and the fixing bolts are threadedly connected to the inside of the mounting holes and extend to the inside of the connecting holes.

[0010] Optionally, a center column is fixedly connected to the interior of the winding drum, a wire outlet hole is formed through the side wall of the center column, a wire inlet hole is formed through the front side of the winding drum, and the wire outlet hole is communicated with the wire inlet hole, and the cable passes through the wire inlet hole and the wire outlet hole and is wound around the outside of the center column.

[0011] All the above optional technical solutions can be combined arbitrarily, and the present utility model does not provide detailed descriptions of the structures after the combinations.

[0012] By means of the above scheme, the beneficial effects of the utility model are as follows:

[0013] 1. Through the setting of the automatic winding mechanism and the winding reel, the automatic winding mechanism can ensure that the cable 2 is always in a stretched state. When the electromagnetic suction cup body shakes during work, since the cable 2 remains in a continuously stretched state, the shaking amplitude of the cable 2 is effectively slowed down, the possibility of failure is reduced, and the number of cable replacements and electromagnetic suction cup maintenance times are reduced.

[0014] 2. When the electromagnetic suction cup body is placed on the ground or sucking scrap steel, the cable 2 will change from a stretched state to a relaxed state. At this time, the constant force spring steel sheet will lose external traction, and will quickly retract and wind around the outside of the main winding drum, while driving the auxiliary winding drum to rotate clockwise. The auxiliary winding drum drives the reel to reel up the remaining cable 2, effectively collecting the cable 2 in real time, and can adjust the reel according to the actual remaining length of the cable 2, so that it always keeps in a stretched state, avoiding the entanglement or damage caused by the contact between the cable 2 and the scrap steel, greatly reducing the failure rate of the electromagnetic suction cup body, not only improving the stability of the electromagnetic suction cup, but also extending the service life of the cable.

[0015] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall appearance structure of the electromagnetic chuck for the scrap steel overhead crane provided by the utility model;

[0017] Figure 2 A right side view of the electromagnetic chuck of a crane for scrap steel provided by the utility model;

[0018] Figure 3 It is a schematic diagram of the structure of the cable 1 and the clamping block in the utility model;

[0019] Figure 4 It is a schematic diagram of the structure of the automatic winding mechanism, winding reel, cable 2 and right-angle guide frame in the utility model;

[0020] Figure 5 It is a schematic diagram of the split structure of the automatic winding mechanism, the winding disc and the right-angle guide frame in the utility model.

[0021] Numbers in the figure: 1. Electromagnetic chuck body; 11. Hanging ear; 12. Shaft rod; 2. Hanging chain; 3. Control box; 4. Cable 1; 5. Clamping block; 51. Support plate; 52. Fixed clamping block; 521. Clamping pad 1; 522. Slot; 523. Connecting hole; 53. Movable clamping block; 531. Clamping pad 2; 532. Inserting block; 533. Mounting hole; 54. Fixing bolt; 55. Placement slot seat; 6. Conductive slip ring; 7. Automatic winding mechanism; 71. Fixed seat; 72. Support seat; 73. Main winding drum; 74. Constant force spring steel sheet; 75. Secondary winding drum; 8. Winding reel; 81. Center column; 82. Wire outlet hole; 83. Wire inlet hole; 9. Cable 2; 10. Right-angle guide frame; 101. Card seat; 102. Wire trough. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] See also Figure 1-5As shown, the utility model provides an electromagnetic chuck for a crane for scrap steel, comprising an electromagnetic chuck body 1, an automatic winding mechanism 7 and a winding disc 8. Three groups of hanging ears 11 are welded at equal intervals on the upper surface of the electromagnetic chuck body 1. A shaft 12 is fixedly connected inside the hanging ears 11. A hanging chain 2 is sleeved on the outer side of the shaft 12. A control box 3 is fixedly connected to the front side of the upper surface of the electromagnetic chuck body 1. A cable 4 is connected to the upper surface of the control box 3. A clamping block 5 is sleeved on the outer side of the cable 4. A conductive slip ring 6 is connected to the upper end of the cable 4. The automatic winding mechanism 7 is connected to the upper surface of the electromagnetic chuck body 1 and is located on one side of the control box 3. The automatic winding mechanism 7 comprises a fixing seat 71. The fixing seat 71 The upper surface of the electromagnetic suction cup body 1 is fixedly connected, and the upper surface of the fixed seat 71 is fixedly connected with a support seat 72. The front side of the support seat 72 is rotatably connected with a main winding drum 73. The outer side of the main winding drum 73 is wound with a constant force spring steel sheet 74, and one end of the constant force spring steel sheet 74 is fixedly connected to the main winding drum 73. The front side of the support seat 72 and one side of the main winding drum 73 are rotatably connected with a secondary winding drum 75, and the other end of the constant force spring steel sheet 74 is fixedly connected to the secondary winding drum 75. The winding drum 8 is fixedly connected to the front side of the secondary winding drum 75. The inner side of the winding drum 8 is wound with a cable 9, and one end of the cable 9 is connected to the conductive slip ring 6. The upper surface of the support seat 72 is welded with a useful The right-angle guide frame 10 is used to limit the sliding path of the cable 2 9. The front side bolts of the right-angle guide frame 10 are installed with a clamping seat 101, and the clamping seat 101 and the right-angle guide frame 10 are closed to form a wire groove 102 that provides a guiding function for the cable 2 9, and the diameter of the cable 2 9 is smaller than the diameter of the wire groove 102; the utility model can use the automatic winding mechanism 7 to wind up the excess cable 2 9 on the inner side of the winding drum 8 when the electromagnetic suction cup body 1 is placed on the ground or sucks scrap steel, so that the cable 2 9 is always in a stretched state, effectively preventing the cable 2 9 from being entangled or damaged by foreign objects; the setting of the conductive slip ring 6 connects the cable 1 4 with the cable 2 9, which can ensure When the reel 8 is rotating, the cable 4 will not rotate. If the cable 14 and the cable 2 9 are the same cable, the cable 14 will be twisted when the reel 8 rotates, but the presence of the conductive slip ring 6 effectively avoids this situation. Therefore, the setting of the conductive slip ring 6 not only ensures the connection between the cable 14 and the cable 2 9, but also effectively prevents the cable 4 from twisting. When the cable 2 9 is stretched or reeled, the cable 2 9 slides inside the wire groove 102, and the wire groove 102 provides a guide position limit for the cable 2 9, which can ensure that the cable 2 9 can be well wound around the outside of the reel 8 when reeling, and avoid the cable 2 9 from running off.

[0024] Furthermore, the clamping block 5 includes a support plate 51, a fixed clamping block 52, a movable clamping block 53 and a fixing bolt 54. The support plate 51 is fixedly connected to the upper surface of the control box 3, the fixed clamping block 52 is fixedly connected to the front side of the support plate 51, the movable clamping block 53 is movably connected to the front side of the fixed clamping block 52, and the fixing bolt 54 fixes the movable clamping block 53 and the fixed clamping block 52. The upper surface of the support plate 51 is fixedly connected with a placement groove seat 55 for installing the conductive slip ring 6; the fixed clamping block 52 and the movable clamping block 53 cooperate with each other to firmly fix the cable 4 on one side of the support plate 51, thereby protecting the cable 4 and reducing the contact wear between the cable 4 and the electromagnetic suction cup body 1.

[0025] Furthermore, a clamping pad 521 is bonded to the inner side of the fixed clamping block 52, and a clamping pad 531 is bonded to the inner side of the movable clamping block 53, and the clamping pad 521 and the clamping pad 531 are respectively attached to the two sides of the cable 4, and the clamping pad 521 and the clamping pad 531 are made of rubber pad material, which avoids hard contact between the fixed clamping block 52 and the movable clamping block 53 when clamping the cable 4, and effectively plays a protective role on the cable 4.

[0026] Furthermore, slots 522 are provided on both sides of the fixed clamping block 52, and connecting holes 523 are provided on the inner walls of the slots 522. Insert blocks 532 are welded on both sides of the movable clamping block 53, and the insert blocks 532 are inserted into the slots 522 on the corresponding side. Mounting holes 533 are provided through the side walls of the inserting block 532, and the fixing bolts 54 are threadedly connected to the inside of the mounting holes 533 and extend to the inside of the connecting holes 523. When the cable 4 needs maintenance and replacement, the fixing bolts 54 can be unscrewed to disengage the movable clamping block 53 from the fixed clamping block 52. At this time, the clamping block 5 will lose its limiting effect on the cable 4, which is convenient for the later maintenance and replacement of the cable 4.

[0027] Furthermore, a center column 81 is fixedly connected to the interior of the winding drum 8, a wire outlet hole 82 is formed through the side wall of the center column 81, and a wire inlet hole 83 is formed through the front side of the winding drum 8, and the wire outlet hole 82 is communicated with the wire inlet hole 83, and the cable 29 passes through the wire inlet hole 83 and the wire outlet hole 82 and is wound around the outside of the center column 81; after the cable 29 is connected to the conductive slip ring 6, it passes into the inside of the wire inlet hole 83, passes out from the wire outlet hole 82, and is finally wound around the outside of the center column 81, so that the excess cable 29 is effectively stored.

[0028] Working principle: In the first step, when the electromagnetic suction cup body 1 is lifted by the overhead crane, the hanging chain 2 is in a stretched state. During this process, the cable 9 is gradually released from the outside of the reel 8. At the same time, the winding drum 8 will rotate counterclockwise, driving the secondary winding drum 75 to rotate synchronously. At this time, the constant force spring steel sheet 74 located on the outside of the main winding drum 73 is gradually wound around the outside of the secondary winding drum 75, and the constant force spring steel sheet 74 is in a stretched state; in the second step, when the electromagnetic suction cup body 1 is placed on the ground or sucks scrap steel, the hanging chain 2 will be in a relaxed state. At this time, after the cable 2 9 loses the external force stretching, there will be residual wire; in the third step: during the process of the hanging chain 2 changing from a stretched state to a relaxed state, the constant force spring steel sheet 74 is gradually retracted. At this time, the constant force spring steel sheet 74 located on the outside of the secondary winding drum 75 is gradually wound around the outside of the main winding drum 73, and the secondary winding drum 75 drives the winding drum 8 to rotate clockwise, and the released cable 2 9 is retracted to the inside of the winding drum 8, so that the real-time automatic winding of the cable 2 9 can be realized to avoid its entanglement or damage.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. An electromagnetic chuck for a crane for scrap steel, characterized in that: The invention comprises an electromagnetic suction cup body (1), an automatic winding mechanism (7) and a winding disc (8); the upper surface of the electromagnetic suction cup body (1) is welded with three groups of hanging ears (11) at equal intervals; the inside of the hanging ears (11) is fixedly connected to a shaft (12); the outer side of the shaft (12) is sleeved with a hanging chain (2); the front side of the upper surface of the electromagnetic suction cup body (1) is fixedly connected to a control box (3); the upper surface of the control box (3) is connected to a cable 1 (4); the outer side of the cable 1 (4) is sleeved with a clamping block (5); the upper end of the cable 1 (4) is connected to a conductive slip ring (6); the automatic winding mechanism (7) is connected to the upper surface of the electromagnetic suction cup body (1) and is located on one side of the control box (3); The automatic winding mechanism (7) comprises a fixed seat (71), wherein the fixed seat (71) is fixedly connected to the upper surface of the electromagnetic chuck body (1), the upper surface of the fixed seat (71) is fixedly connected to a support seat (72), the front side of the support seat (72) is rotatably connected to a main winding drum (73), the outer side of the main winding drum (73) is wound with a constant force spring steel sheet (74), and one end of the constant force spring steel sheet (74) is fixedly connected to the main winding drum (73), the front side of the support seat (72) and located on one side of the main winding drum (73) is rotatably connected to a secondary winding drum (75), and the other end of the constant force spring steel sheet (74) is wound with the secondary winding drum (75). 5) are fixedly connected, the winding drum (8) is fixedly connected to the front side of the secondary winding drum (75), the inner side of the winding drum (8) is wound with a cable 2 (9), and one end of the cable 2 (9) is connected to a conductive slip ring (6), the upper surface of the support seat (72) is welded with a right-angle guide frame (10) for limiting the sliding path of the cable 2 (9), the front side of the right-angle guide frame (10) is bolted with a clamping seat (101), and the clamping seat (101) and the right-angle guide frame (10) are closed to form a wire groove (102) for providing a guide function for the cable 2 (9), and the diameter of the cable 2 (9) is smaller than the diameter of the wire groove (102).

2. The electromagnetic chuck for overhead crane for scrap steel according to claim 1, characterized in that: The clamping block (5) comprises a support plate (51), a fixed clamping block (52), a movable clamping block (53) and a fixing bolt (54); the support plate (51) is fixedly connected to the upper surface of the control box (3); the fixed clamping block (52) is fixedly connected to the front side of the support plate (51); the movable clamping block (53) is movably connected to the front side of the fixed clamping block (52); the fixing bolt (54) fixes the movable clamping block (53) and the fixed clamping block (52); and a placement slot seat (55) for mounting a conductive slip ring (6) is fixedly connected to the upper surface of the support plate (51).

3. The electromagnetic chuck for overhead crane for scrap steel according to claim 2, characterized in that: A clamping pad 1 (521) is bonded to the inner side of the fixed clamping block (52), and a clamping pad 2 (531) is bonded to the inner side of the movable clamping block (53), and the clamping pad 1 (521) and the clamping pad 2 (531) are respectively attached to the two sides of the cable 1 (4).

4. The electromagnetic chuck for overhead crane for scrap steel according to claim 2, characterized in that: Slots (522) are provided on both sides of the fixed clamp block (52), and connecting holes (523) are provided on the inner walls of the slots (522). Insert blocks (532) are welded on both sides of the movable clamp block (53), and the insert blocks (532) are inserted into the slots (522) on the corresponding side. A mounting hole (533) is provided through the side wall of the insert block (532), and the fixing bolt (54) is threadedly connected to the inside of the mounting hole (533) and extends to the inside of the connecting hole (523).

5. The electromagnetic chuck for overhead crane for scrap steel according to claim 1, characterized in that: The winding drum (8) is fixedly connected to a center column (81) inside, a side wall of the center column (81) is provided with a wire outlet hole (82), a front side of the winding drum (8) is provided with a wire inlet hole (83), and the wire outlet hole (82) is communicated with the wire inlet hole (83), and the second cable (9) passes through the wire inlet hole (83) and the wire outlet hole (82) and is wound around the outside of the center column (81).

Images