CN216997226U - Electromagnetic crane - Google Patents
Electromagnetic crane Download PDFInfo
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- CN216997226U CN216997226U CN202220766358.5U CN202220766358U CN216997226U CN 216997226 U CN216997226 U CN 216997226U CN 202220766358 U CN202220766358 U CN 202220766358U CN 216997226 U CN216997226 U CN 216997226U
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- electromagnetic chuck
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Abstract
An electromagnetic hoist comprising: an electromagnetic chuck; the lifting ring is arranged at the top of the electromagnetic chuck and is used for being connected with a hook of an overhead travelling crane in a hooking manner; and the distance sensor is arranged on the electromagnetic chuck and is used for detecting the position of the bottom of the electromagnetic chuck towards the lower part. By last, can detect the distance between electromagnet and the coil of strip through distance sensor, the overhead traveling crane can carry out automatic positioning according to the measuring distance, can accurate contact coil of strip fast, the hoist and mount to the coil of strip is accomplished to the efficient. And the crane can also be assisted to hoist the steel coil by using the electromagnetic crane. Therefore, the safety accidents that the coil falling and the like caused by insufficient magnetic force between the steel coil and the electromagnetic chuck can be avoided due to the fact that the height of the lifting hook of the crown block is too high during the lowering. The overhead traveling crane lifting hook can be prevented from being excessively low in height due to transfer, so that the lifting hook is separated from the lifting ring, and therefore the unhooking accident is caused.
Description
Technical Field
The utility model relates to the technical field of hoisting equipment, in particular to an electromagnetic crane.
Background
In a plate rolling workshop, a crown block is generally used for transferring steel coils. The existing crown block usually needs to use a special clamp when transferring the steel coil, and the steel coil is hooked and lifted by the coil core of the steel coil. Therefore, in the process of operating the crown block, the crown block worker needs to continuously adjust the posture of the clamp so that the clamp can be aligned with the core of the steel coil. The whole process of hoisting the steel coil wastes time and labor, and the operating efficiency of the overhead travelling crane is seriously influenced.
In order to improve the operation efficiency of hoisting the steel coil by the overhead travelling crane, some manufacturers choose to use the electromagnetic crane to complete hoisting and transferring of the steel coil. When the overhead traveling crane uses the electromagnetic crane to hoist the steel coil, the electromagnetic switch is opened only by placing the electromagnetic chuck on the steel coil, and the electromagnetic chuck can adsorb the steel coil under the electromagnetic chuck through the magnetism generated by the electromagnetic effect, so that the operation efficiency is improved. However, the closer the distance between the electromagnetic chuck and the steel coil is, the greater the magnetic force received by the steel coil is. If the electromagnetic chuck is not in contact with the steel coil or is lifted when the distance between the electromagnetic chuck and the steel coil is far, accidents such as coil falling and the like can occur due to insufficient magnetic force on the steel coil. Or after the electromagnetic chuck is contacted with the steel coil, the hook of the overhead traveling crane still continues to fall, so that accidents such as unhooking, electromagnetic hanging and slipping can be caused.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides an electromagnetic crane to improve the safety of hoisting and transferring a steel coil.
The utility model provides an electromagnetic crane, comprising: an electromagnetic chuck; the lifting ring is arranged at the top of the electromagnetic chuck and is used for being connected with a hook of an overhead travelling crane in a hooking manner; and the distance sensor is arranged on the electromagnetic chuck and used for detecting the electromagnetic chuck from the bottom of the electromagnetic chuck to the downward direction.
By last, can detect the distance between electromagnet and the coil of strip through distance sensor, the overhead traveling crane can carry out automatic positioning according to the measuring distance, can accurate contact coil of strip fast, the hoist and mount to the coil of strip is accomplished to the efficient. And the crane can also be assisted to hoist the steel coil by using the electromagnetic crane. Therefore, the safety accidents that the lifting hook of the crown block is too high due to the fact that the lifting hook is lowered, and the coil falling and the like caused by insufficient magnetic force are avoided between the steel coil and the electromagnetic chuck. The overhead traveling crane lifting hook can be further prevented from being excessively low in height due to lowering, so that the lifting hook is separated from the lifting ring, and therefore the unhooking accident is caused.
In some embodiments, the electromagnetic chuck is vertically provided with a mounting hole, and the distance sensor is arranged in the mounting hole.
By last, distance sensor is through installing in the mounting hole of perpendicular setting to make distance sensor can detect the coil of strip under the electromagnet, thereby can reduce the error that the distance detected.
In some embodiments, the mounting hole is located in a central position of the electromagnetic chuck.
By last, electromagnet when aiming at coil of strip intermediate position and hoist, can make distance sensor can detect the distance at electromagnet and coil of strip top to reduce detection error.
In some embodiments, further comprising: and the photoelectric switch is arranged on the lifting ring and is positioned below the hook after the hook is connected.
By last, can detect the couple of hook on rings through photoelectric switch, highly crossing low when the couple is transferred, when the relative position between couple and the rings crosses low, can obtain the signal through photoelectric switch to can assist the overhead traveling crane worker to operate, avoid taking place the unhook accident.
In some embodiments, further comprising: a communication device, wherein the communication device is connected with the crown block in a communication way; a controller electrically connected with the distance sensor and the communication device.
By last, the controller can be according to the signal that distance sensor and photoelectric switch detected, sends control signal to the overhead traveling crane through communication device to supplementary overhead traveling crane worker operates, avoids overhead traveling crane worker misoperation to cause the incident.
In some embodiments, further comprising: and the first state lamp is electrically connected with the controller, and is turned on when the distance detected downwards by the distance sensor is smaller than a first threshold value.
By last, can be when distance that distance sensor detects downwards is less than first threshold value, the distance of electromagnet and coil of strip top promptly can make the coil of strip adsorb on electromagnet safely, lights supplementary overhead traveling crane worker through first state lamp and confirms that electromagnet reaches preset position, can carry out the operation on next step. Therefore, the safety of the crown block worker during operation can be improved.
In some embodiments, further comprising: and the second state lamp is electrically connected with the controller, and is turned on when the photoelectric switch detects the hook.
By last, can light through the second state lamp when couple and rings break away from, provide the early warning to the overhead traveling crane worker, the suggestion overhead traveling crane worker stops control couple and continues the whereabouts, avoids taking place the unhook accident.
Drawings
Fig. 1 is a schematic perspective view of an electromagnetic crane according to an embodiment of the present application;
fig. 2 is an electrical connection diagram of an electromagnetic crane in the embodiment of the present application.
Description of the reference numerals
100, electromagnetic hanging; 110 electromagnetic chucks; 111 mounting holes; 120 hoisting rings; a 130 distance sensor; 140 a photoelectric switch; 150 a controller; 160 a communication device; 170 a first status light; 180 second state light.
Detailed Description
Next, the specific structure of the electromagnetic crane 100 in the embodiment of the present application will be described in detail with reference to the drawings.
Fig. 1 is a schematic perspective view of an electromagnetic crane 100 according to an embodiment of the present disclosure. As shown in fig. 1, an electromagnetic crane 100 in the embodiment of the present application includes: an electromagnetic chuck 110, a lifting ring 120, and a distance sensor 130. The electromagnetic chuck 110 may be square, circular, or any other suitable shape, but is not limited thereto. The electromagnetic chuck 110 can be connected with the overhead travelling crane through a power line, and the magnetism of the electromagnetic chuck 110 is controlled by utilizing the electromagnetic induction principle. The hanging ring 120 is arranged on the top of the electromagnetic chuck 110 and is used for being hooked and connected with a hook of a crown block. The distance sensor 130 may be a laser range sensor, or other type of sensor that can perform distance detection. The distance sensor 130 is provided on the electromagnetic chuck 110, and is detected from the bottom of the electromagnetic chuck 110 facing downward.
By last, can detect the distance between electromagnet 110 and the coil of strip through distance sensor 130, the overhead traveling crane can carry out automatic positioning according to measuring distance, can accurate contact coil of strip fast, and the hoist and mount to the coil of strip is accomplished to the efficient. And the crane worker can also be assisted to hoist the steel coil by using the electromagnetic crane 100. Therefore, the safety accidents that the coil falling and the like caused by insufficient magnetic force between the steel coil and the electromagnetic chuck 110 due to the fact that the height of the lifting hook of the overhead travelling crane is too high during the lowering process can be avoided. The overhead traveling crane lifting hook can be prevented from being too low in height due to transfer, so that the lifting hook is separated from the lifting ring 120, and therefore the unhooking accident is caused.
As shown in fig. 1, the electromagnetic chuck 110 is vertically provided with a mounting hole 111, and the distance sensor 130 is disposed in the mounting hole 111. Therefore, the distance sensor 130 can detect the steel coil right below the electromagnetic chuck 110, and the error of distance detection can be reduced.
Specifically, the mounting hole 111 may be disposed at any suitable position on the electromagnetic chuck 110, and preferably, the mounting hole 111 may be disposed at a central position of the electromagnetic chuck 110. So that the electromagnetic chuck 110 can detect the distance between the electromagnetic chuck 110 and the top of the steel coil when being hoisted by aligning to the middle position of the steel coil, thereby reducing the detection error.
As shown in fig. 1, the electromagnetic crane 100 in the embodiment of the present application further includes a photoelectric switch 140, the photoelectric switch 140 may specifically be a photoelectric correlation switch, and the photoelectric switch 140 is disposed on the hanging ring 120 and located below the hook after the hook is hooked to the hanging ring 120. Thereby can detect the couple of hook on rings 120 through photoelectric switch 140, highly crossing when the couple is transferred lowly, when the relative position between couple and rings 120 crosses lowly, can obtain the signal through photoelectric switch 140 to can assist the overhead traveling crane worker to operate, avoid taking place the unhook accident.
Fig. 2 is a schematic electrical connection diagram of the electromagnetic crane 100 according to the embodiment of the present application. As shown in fig. 2, the electromagnetic crane 100 in the embodiment of the present application further includes: controller 150 and communication device 160. The communication device 160 is communicatively connected to the overhead traveling crane, and the specific communication connection manner may be a wired communication connection or a wireless communication connection, which is not limited thereto. Preferably, the communication device 160 is connected by wireless communication, so that the loss of communication cable during wired communication connection can be avoided. The controller 150 may be a PLC, an ECU or another type of control device, the controller 150 is electrically connected to the distance sensor 130 and the communication device 160, and the controller 150 may send a control signal to the overhead traveling crane through the communication device 160 according to signals detected by the distance sensor 130 and the photoelectric switch 140, so as to assist the overhead traveling crane to perform an operation and avoid a safety accident caused by an operation error of the overhead traveling crane.
Further, as shown in fig. 2, the electromagnetic crane 100 in the embodiment of the present application further includes: a first status light 170 and a second status light 180. The first status light 170 is electrically connected to the controller 150, and when the distance detected downward by the distance sensor 130 is less than a first threshold value, the first status light 170 is turned on. From this, can be when distance sensor 130 detects downwards and is less than first threshold value with the distance of coil of strip top, the distance of electromagnetic chuck 110 and coil of strip top promptly, when can making the coil of strip adsorb on electromagnetic chuck 110 safely, light supplementary overhead traveling crane worker through first state lamp 170 and confirm that electromagnetic chuck 110 reaches the predetermined position, can carry out next operation, for example control couple stops the whereabouts. Therefore, the safety of the crown block worker during operation can be improved. The second status light 180 is electrically connected to the controller 150, and when the hook is detected by the photoelectric switch 140, the second status light 180 is turned on. From this, can light through second status light 180 when couple and rings 120 break away from, provide the early warning to the overhead traveling crane worker, the suggestion overhead traveling crane worker stops control couple and continues the whereabouts, avoids taking place the unhook accident.
Further, the first status light 170 and the second status light 180 may be disposed at suitable positions on the electromagnetic chuck 110 or on the crown block, which is not limited thereto. The first status light 170 and the second status light 180 may be distinguished by color, shape, location, or identification to avoid the crown runner from confusing the first status light 170 and the second status light 180. For example, the first status light 170 may be set to green, and the second status light 180 may be set to red, without limitation.
Furthermore, after the electromagnetic crane 100 in the embodiment of the present application is installed on the overhead traveling crane, the overhead traveling crane can also be controlled according to an overhead traveling crane dispatching system. Specifically, the hook moves according to a target position instruction issued by the crown block dispatching system, and the hook is automatically positioned at the upper part of the steel coil. When the hook contacts too much steel coil or does not reach the steel coil due to system errors or steel coil data deviation and other factors, and the system is unstable, the positions of the electromagnetic hook 100 and the steel coil can be detected through the distance sensor 130 of the electromagnetic hook 100, so that the hook is controlled to perform position compensation, and the electromagnetic hook 100 can effectively and accurately reach the steel coil. In order to ensure that the electromagnetic crane 100 effectively contacts the steel coil, the signal detected by the photoelectric switch 140 is used as a supplement, after the photoelectric switch 140 detects the signal of the hook, the electromagnetic chuck 110 can be considered to have effectively contacted the steel coil, at this time, the electromagnetic chuck 110 can be controlled to execute a magnetic building command, and after the magnetic signal is full, the main hook is controlled to ascend to complete the steel coil picking process.
When the steel coil needs to be released, the hook moves according to a target position instruction issued by the crown block dispatching system, and the lower part of the steel coil is in place. If the photoelectric switch 140 does not detect the signal of the hook, the hook is controlled to continue to be below a certain height, for example, 100mm below the hook. The photoelectric switch 140 detects a signal of the hook to control the hook to stop and cut off the power of the electromagnetic chuck 110, thereby completing the release of the steel coil.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. An electromagnetic crane, comprising:
an electromagnetic chuck;
the lifting ring is arranged at the top of the electromagnetic chuck and is used for being connected with a hook of a crown block in a hooking manner;
and the distance sensor is arranged on the electromagnetic chuck and is used for detecting the position of the bottom of the electromagnetic chuck towards the lower part.
2. The electromagnetic crane according to claim 1, wherein said electromagnetic chuck is vertically provided with a mounting hole, and said distance sensor is disposed in said mounting hole.
3. The electromagnetic sling according to claim 2, wherein said mounting hole is located at a central position of said electromagnetic chuck.
4. The electromagnetic crane according to any one of claims 1-3, further comprising:
the photoelectric switch is arranged on the hanging ring and is positioned below the hook after the hook is connected.
5. The electromagnetic crane according to claim 4, further comprising:
a communication device, wherein the communication device is connected with the crown block in a communication way;
a controller electrically connected to the distance sensor, the photoelectric switch, and the communication device.
6. The electromagnetic crane according to claim 5, further comprising:
and the first state lamp is electrically connected with the controller, and is turned on when the distance detected downwards by the distance sensor is smaller than a first threshold value.
7. The electromagnetic crane according to claim 5, further comprising:
and the second state lamp is electrically connected with the controller, and is turned on when the photoelectric switch detects the hook.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220766358.5U CN216997226U (en) | 2022-03-31 | 2022-03-31 | Electromagnetic crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220766358.5U CN216997226U (en) | 2022-03-31 | 2022-03-31 | Electromagnetic crane |
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| CN216997226U true CN216997226U (en) | 2022-07-19 |
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| CN202220766358.5U Active CN216997226U (en) | 2022-03-31 | 2022-03-31 | Electromagnetic crane |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117383397A (en) * | 2023-12-08 | 2024-01-12 | 纽科伦（新乡）起重机有限公司 | Protection method of electromagnetic chuck lifting appliance redundancy protection system |
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2022
- 2022-03-31 CN CN202220766358.5U patent/CN216997226U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117383397A (en) * | 2023-12-08 | 2024-01-12 | 纽科伦（新乡）起重机有限公司 | Protection method of electromagnetic chuck lifting appliance redundancy protection system |
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