Lifting appliance for lifting steel plate

Abstract

The utility model discloses a lifting appliance for lifting a steel plate, and belongs to the technical field of steel plate lifting appliances. A lifting appliance for lifting a steel plate comprises a lifting beam and an electromagnetic chuck, the electromagnetic chuck is connected with the lower portion of the lifting beam through a fixing shell, the middles of the two sides of the electromagnetic chuck are hinged to the lower portion of the fixing shell, and a limiting mechanism is arranged between the electromagnetic chuck and the fixing shell and comprises a limiting disc and a plug pin mechanism. A pin hole is formed in the limiting disc; according to the utility model, through the arrangement of the limiting disc and the bolt mechanism, the electromagnetic chuck can be limited or unlimited, when the limiting is unlimited, the electromagnetic chuck can swing obliquely to realize the effect of inclined hoisting, and when the electromagnetic chuck is limited, the electromagnetic chuck cannot swing obliquely but is kept horizontal, so that horizontal hoisting can be carried out at the moment; the effect that one set of lifting appliance has two lifting modes is achieved, and therefore the problem that in the prior art, an electromagnetic lifting appliance for lifting a steel plate is large in limitation is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel plate hangers, in particular to a hanger for hoisting steel plates. Background Art

[0002] During the processing or production of steel plates, cranes or overhead cranes are needed to move the steel plates to the appropriate location, and during the lifting process, slings are needed to connect the steel plates and the lifting machines.

[0003] Electromagnetic lifter is a common steel plate lifter. However, electromagnetic lifter is divided into horizontal lifting and inclined lifting. Horizontal lifting means that the steel plate remains in a horizontal state when being lifted and transferred, that is, the electromagnetic suction cup is always in a horizontal state. This type of lifter is suitable for stacking steel plates or lifting them to a workstation that needs to be placed horizontally for processing. Inclined lifting means that the steel plate is in an inclined state after being lifted, that is, the electromagnetic suction cup can be tilted. This type of lifter is suitable for stacking steel plates upright or lifting them to a workstation that needs to be placed upright for processing.

[0004] If both horizontal lifting and inclined lifting are required in a site, two sets of electromagnetic lifting devices need to be prepared, which is relatively costly. Because the present application proposes an electromagnetic lifting device with switchable lifting states. Utility Model Content

[0005] The utility model aims to solve the problem that the electromagnetic hanger used for hanging steel plates in the prior art has great limitations, and proposes a hanger for hanging steel plates.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A sling for lifting steel plates comprises a lifting beam and an electromagnetic suction cup, wherein the electromagnetic suction cup is connected to the lower part of the lifting beam through a fixed shell, the middle parts of both sides of the electromagnetic suction cup are hinged to the lower part of the fixed shell, a limiting mechanism is arranged between the electromagnetic suction cup and the fixed shell, the limiting mechanism comprises a limiting plate and a latch mechanism, and a pin hole is opened on the limiting plate.

[0008] Preferably, the limiting plate is fixedly arranged on the upper surface of the electromagnetic chuck.

[0009] Preferably, the latch mechanism comprises a latch portion and a limiting portion.

[0010] Preferably, the latch portion includes a latch, a first fixed block and a second fixed block, the first fixed block and the second fixed block are both fixedly arranged inside the fixed shell and are respectively located on both sides of the limiting plate, and through holes are opened in the middle of the first fixed block and the second fixed block, and the latch can be inserted into the two through holes at the same time.

[0011] Preferably, the latch is moved by a driving unit, and the driving unit comprises an electric telescopic rod, which is fixedly disposed in a fixed shell, and a telescopic end of the electric telescopic rod is connected to the latch.

[0012] Preferably, a push-pull hole is provided on one end of the latch near the electric telescopic rod, a push-pull block is fixedly provided on the telescopic end of the electric telescopic rod, the push-pull block is located in the push-pull hole, and a gap is left between the two.

[0013] Preferably, the limiting portion comprises an electromagnet, and the electromagnet is fixedly arranged on a side surface of the first fixing block.

[0014] Preferably, the top of the hanging beam is connected to the lifting machine via four hanging chains.

[0015] Compared with the prior art, the utility model provides a sling for lifting steel plates, which has the following beneficial effects.

[0016] 1. The utility model can be used to limit or release the limit of the electromagnetic suction cup through the limit plate and the latch mechanism. When the limit is released, the electromagnetic suction cup can be tilted and swung to achieve the effect of tilted lifting. When limited, the electromagnetic suction cup cannot be tilted and swung, but remains horizontal. At this time, horizontal lifting can be performed, achieving the effect of two lifting modes with one set of lifting equipment, thereby solving the problem of large limitations of electromagnetic lifting equipment used for lifting steel plates in the prior art.

[0017] Other advantages, objectives and features of the present invention will be described in the following description to some extent; and will be apparent to those skilled in the art based on the following examination and study to some extent; or, may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 It is a schematic diagram of the partially disassembled structure of the utility model.

[0020] Figure 3 It is a schematic diagram of the structure of the electromagnetic chuck and the fixed shell in the utility model.

[0021] Figure 4 It is a schematic diagram of the cross-sectional structure of the electromagnetic chuck and the fixed shell in the utility model.

[0022] Figure 5 For this utility model Figure 4 Enlarged structural diagram at A in the middle.

[0023] Figure 6It is a schematic diagram of the structure of the fixed shell and the electromagnetic chuck in the utility model.

[0024] Figure 7 It is a schematic diagram of the cross-sectional structure of the fixed shell in the utility model.

[0025] In the figure:

[0026] 1. Lifting beam; 2. Lifting chain; 3. Fixed shell; 4. Limiting plate; 5. Electromagnetic suction cup; 6. Electric telescopic rod; 7. Latch; 8. Electromagnet; 9. First fixed block; 10. Push-pull block; 11. Push-pull hole; 12. Pin hole; 13. Second fixed block. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] Reference Figure 1-7 A lifting device for lifting steel plates includes a lifting beam 1 and an electromagnetic suction cup 5. The electromagnetic suction cup 5 is connected to the lower part of the lifting beam 1 through a fixed shell 3. The middle parts of both sides of the electromagnetic suction cup 5 are hinged to the lower part of the fixed shell 3. A limiting mechanism is arranged between the electromagnetic suction cup 5 and the fixed shell 3. The limiting mechanism includes a limiting plate 4 and a latch mechanism. A pin hole 12 is opened on the limiting plate 4.

[0029] In a specific embodiment of the utility model, the latch mechanism can be inserted into the pin hole 12, at which time it is in a limited state, and relative rotation will not occur between the electromagnetic suction cup 5 and the fixed shell 3, so that the electromagnetic suction cup 5 is in a horizontal state, and horizontal lifting operations can be performed at this time. When the latch mechanism leaves the pin hole 12, it is in a released limit state, and relative rotation can occur between the electromagnetic suction cup 5 and the fixed shell 3, and inclined lifting operations can be performed at this time.

[0030] The limit plate 4 is fixedly arranged on the upper surface of the electromagnetic suction cup 5. Through this arrangement, when the latch mechanism is inserted into the pin hole 12, the position of the limit plate 4 is fixed, so that the electromagnetic suction cup 5 and the fixed shell 3 will not rotate relative to each other, but can rotate relative to each other.

[0031] The latch mechanism comprises a latch part and a limiting part, and the limiting part is provided to limit the position of the latch part.

[0032] The latch portion includes a latch 7, a first fixing block 9 and a second fixing block 13. The first fixing block 9 and the second fixing block 13 are both fixedly arranged inside the fixed shell 3 and are respectively located on both sides of the limiting plate 4. Through holes are provided in the middle of the first fixing block 9 and the second fixing block 13, and the latch 7 can be inserted into the two through holes at the same time. When in use, when the latch 7 is inserted into the two through holes and the pin hole 12 at the same time, the limiting of the limiting plate 4 is completed, thereby preventing the electromagnetic suction cup 5 from rotating. When the latch 7 leaves the pin hole 12, the limiting plate 4 is not constrained by the latch 7, and can rotate with the electromagnetic suction cup 5 at this time.

[0033] The latch 7 is moved by a driving unit, which includes an electric telescopic rod 6, which is fixedly arranged in the fixed shell 3, and the telescopic end of the electric telescopic rod 6 is connected to the latch 7. When in use, the electric telescopic rod 6 is used to move the latch 7, so that the latch 7 is inserted into the pin hole 12 or the latch 7 is separated from the pin hole 12.

[0034] A push-pull hole 11 is provided on the end of the latch 7 near the electric telescopic rod 6, and a push-pull block 10 is fixedly provided on the telescopic end of the electric telescopic rod 6. The push-pull block 10 is located in the push-pull hole 11, and a gap is left between the two. When in use, the electric telescopic rod 6 is extended and retracted to drive the push-pull block 10 to move, and then the push-pull block 10 drives the latch 7 to move under the action of the push-pull hole 11. By leaving a gap between the push-pull block 10 and the push-pull hole 11, after the latch 7 is inserted into the pin hole 12, if the electromagnetic suction cup 5 and the limit plate 4 shake under the action of external force and affect the latch 7, the electric telescopic rod 6 will not be affected much, which is used to protect the electric telescopic rod 6.

[0035] The limiting part includes an electromagnet 8, which is fixedly arranged on the side of the first fixed block 9. Through the arrangement of the electromagnet 8, after the latch 7 is inserted into the pin hole 12, the electromagnet 8 absorbs the latch 7, so that a certain gap is left between the push-pull block 10 and the push-pull hole 11, thereby reducing the influence of the latch 7 on the electric telescopic rod 6.

[0036] The top of the hanging beam 1 is connected to a hoisting machine via four hanging chains 2, and the hoisting machine may be a crane or an overhead crane.

[0037] During tilted lifting, the electric telescopic rod 6 drives the latch 7 to disengage from the pin hole 12, that is, the latch 7 moves toward the electric telescopic rod 6. In this state, the latch 7 does not affect the rotation of the limit plate 4, so that the electromagnetic suction cup 5 can rotate freely. When lifting the steel plate, the electromagnetic suction cup 5 is placed on the steel plate near the edge using a lifting machine, and the steel plate is sucked by the electromagnetic suction cup 5 and then lifted. At this time, since the electromagnetic suction cup 5 is not at the center of gravity of the steel plate, the steel plate will be lifted tilted.

[0038] When switching from the inclined lifting state to the horizontal lifting state, the electromagnetic suction cup 5 will be in a horizontal state in the no-load state. If the electromagnetic suction cup 5 is not in a horizontal state, the electromagnetic suction cup 5 can be placed on a horizontal ground by a lifting machine. When the electromagnetic suction cup 5 is in a horizontal state, the electric telescopic rod 6 is used to drive the latch 7 to be inserted into the pin hole 12 and the two through holes. At this time, the position of the limit plate 4 is fixed to prevent the limit plate 4 from rotating, and then the electromagnetic suction cup 5 cannot rotate. When lifting the steel plate, the electromagnetic suction cup 5 is placed on the steel plate at a position close to the center of gravity by a lifting machine, and the steel plate is sucked by the electromagnetic suction cup 5 and then lifted. At this time, since the electromagnetic suction cup 5 is close to the center of gravity of the steel plate, the steel plate can be lifted horizontally. Even if there is a deviation, the steel plate is not easy to tilt because the electromagnetic suction cup 5 cannot rotate.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0041] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A lifting device for lifting steel plates, characterized in that: The invention comprises a suspension beam (1) and an electromagnetic suction cup (5), wherein the electromagnetic suction cup (5) is connected to the lower part of the suspension beam (1) via a fixed shell (3), the middle parts of both sides of the electromagnetic suction cup (5) are hinged to the lower part of the fixed shell (3), and a limiting mechanism is arranged between the electromagnetic suction cup (5) and the fixed shell (3), wherein the limiting mechanism comprises a limiting plate (4) and a latch mechanism, and a pin hole (12) is provided on the limiting plate (4).

2. A steel plate lifting device according to claim 1, characterized in that: The limiting plate (4) is fixedly arranged on the upper surface of the electromagnetic suction cup (5).

3. A steel plate lifting device according to claim 1, characterized in that: The latch mechanism comprises a latch portion and a limiting portion.

4. A steel plate lifting device according to claim 3, characterized in that: The latch portion comprises a latch (7), a first fixing block (9) and a second fixing block (13); the first fixing block (9) and the second fixing block (13) are both fixedly arranged inside the fixing shell (3) and are respectively located on two sides of the limiting plate (4); through holes are provided in the middle of the first fixing block (9) and the second fixing block (13); the latch (7) can be inserted into the two through holes at the same time.

5. A steel plate lifting device according to claim 4, characterized in that: The latch (7) is moved by a driving unit, wherein the driving unit comprises an electric telescopic rod (6), wherein the electric telescopic rod (6) is fixedly arranged in the fixed shell (3), and the telescopic end of the electric telescopic rod (6) is connected to the latch (7).

6. A steel plate lifting device according to claim 5, characterized in that: A push-pull hole (11) is provided on one end of the latch pin (7) close to the electric telescopic rod (6); a push-pull block (10) is fixedly provided at the telescopic end of the electric telescopic rod (6); the push-pull block (10) is located in the push-pull hole (11), and a gap is left between the two.

7. The steel plate lifting device according to claim 4, characterized in that: The limiting portion comprises an electromagnet (8), and the electromagnet (8) is fixedly arranged on a side surface of the first fixing block (9).

8. The steel plate lifting device according to claim 1, characterized in that: The top of the lifting beam (1) is connected to the lifting machine via four lifting chains (2).

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