CN211470508U - Anti-falling device of electromagnetic crane - Google Patents

Abstract

The utility model discloses an electromagnetic crane anti-falling device, including electromagnet, still include a plurality of electronic arms that bend in the electromagnet outside of circumference equipartition and be used for connecting the locking structure of all electronic arms that bend, electronic arm that bends is folding arm, and electronic arm that bends includes the fixed arm, the extension arm, the motor that the arm that bends and be used for driving electronic arm that bends expandes, and the electromagnet outside is located to the fixed arm, and the fixed arm is located to the motor, and extension arm one end is rotated and is connected the fixed arm, and the other end is rotated and is connected the arm that bends, and the arm that bends is connected locking structure. The emergency battery also comprises a height sensor and an emergency battery. Through set up a plurality of electronic crank arms in electromagnet's the outside, a plurality of electronic crank arms are connected and are locked when the handling forged steel, form the gallows in the outside of the forged steel of hanging, prevent that electromagnetic crane loses the forged steel of electricity and fall. The electric crank arm can be folded and unfolded at the lifting safety height by arranging the height sensor, and the lifting process is not influenced. Through setting up emergency battery, avoid electronic crank arm to lose the electricity.

Description

Anti-falling device of electromagnetic crane

Technical Field

The utility model belongs to the technical field of the electromagnetic crane, concretely relates to electromagnetic crane anti-falling device.

Background

An apparatus for transporting ferrous materials using electromagnets is called an electromagnetic crane. The main part of the electromagnetic crane is an electromagnet. When the current is switched on, the electromagnet firmly sucks the steel object and hoists the steel object to a specified place. The current is cut off, the magnetism disappears, and the steel object is put down. The electromagnetic crane is very convenient to use, can be used only by current, and can be applied to scrap iron and steel recovery departments, steel-making workshops and the like.

The electromagnetic crane can generate strong magnetic field force, iron sheets, iron wires, iron nails, scrap iron and other various iron materials with the weight of dozens of tons can be conveniently collected and carried without being packed or tied up, the operation is labor-saving, and the work is simplified. Ferrous materials and machines packed in wooden boxes can be handled similarly. When the crane works, as long as the current in the electromagnet coil is not stopped, the sucked heavy object cannot fall down, and the invisible magnetic force is more reliable than that of a firm chain. If the power is cut off for some reason, accidents can be caused, so that steel claws are arranged on some electromagnetic cranes, and after a heavy object to be conveyed is lifted, firm steel claws automatically fall down to tightly buckle the heavy object. The crane cannot handle hot iron blocks because the high temperature steel cannot be magnetized. A large electromagnetic crane can lift nearly one hundred tons of heavy objects at one time.

After the iron core is inserted into the energized solenoid, the iron core is magnetized by the magnetic field of the energized solenoid. The magnetized core also becomes a magnet, so that the magnetism of the solenoid is greatly enhanced because the two magnetic fields are superposed with each other. In order to make the electromagnet more magnetic, the iron core is generally made into a shoe shape. However, it should be noted that the winding direction of the coil on the horseshoe is opposite, one side is clockwise, and the other side is counterclockwise. If the winding directions are the same, the magnetizing actions of the two coils on the iron core are mutually counteracted, so that the iron core does not show magnetism. In addition, the iron core of the electromagnet is made of soft iron, but cannot be made of steel. Otherwise, once the steel is magnetized, the magnetism of the steel can be kept for a long time and the steel cannot be demagnetized, and the strength of the magnetism of the steel cannot be controlled by the magnitude of the current, so that the advantages of the electromagnet are lost.

The electromagnet is a device which can generate magnetic force by passing current, belongs to a non-permanent magnet, and can easily start or eliminate the magnetism of the electromagnet.

When the electromagnetic crane works and the hoisted objects fall to cause damage due to power loss, the electromagnetic chuck must be ensured to supply power. The lifting electromagnets of the electromagnetic crane should be powered by a dedicated circuit. Even so, the electromagnetic crane still can have the power failure, the risk that the article of its handling falls, especially a monoblock forged steel, and the consequence of falling is beyond the limit of thinking.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome among the prior art electromagnetic crane handling forged steel and have the not enough of the risk of falling of losing electricity, provide an electromagnetic crane anti-falling device, can lock through a plurality of crank arms at the handling in-process and connect, at the outside formation gallows of the forged steel of hanging, prevent that electromagnetic crane loses electricity and forge the steel and fall.

For solving the prior art problem, the utility model discloses an electromagnetic crane anti-falling device, including electromagnet, still include a plurality of electronic arms that bend in the electromagnet outside of circumference equipartition and the locking structure that is used for connecting all electronic arms that bend, electronic arm that bends is folding arm, electronic arm that bends includes fixed arm, extension arm, the motor that the electronic arm that bends expandes of drive, the electromagnet outside is located to the fixed arm, the fixed arm is located to the motor, extension arm one end is rotated and is connected the fixed arm, the other end is rotated and is connected the arm that bends, the arm that bends connects the locking structure.

Further, the length of the bending arm is smaller than the radius of the electromagnetic chuck.

Furthermore, the locking structure comprises a buckle disc and a plurality of hook portions used for being clamped into the buckle disc, the buckle disc is arranged on any one bending arm, and each hook portion is connected with one bending arm.

Further, the number of the electric crank arms is six.

Further, the electric crank arm is a carbon steel crank arm.

Further, still include the altitude sensor, the altitude sensor is located electromagnet.

Further, the electric crank arm further comprises an emergency battery, and the emergency battery is connected with the motor.

The utility model discloses beneficial effect who has:

1. through set up a plurality of electronic crank arms in electromagnet's the outside, a plurality of electronic crank arms are connected and are locked when the handling forged steel, form the gallows in the outside of the forged steel of hanging, prevent that electromagnetic crane loses the forged steel of electricity and fall.

2. The electric crank arm can be folded and unfolded at the lifting safety height by arranging the height sensor, and the lifting process is not influenced.

3. Through setting up emergency battery, avoid electronic crank arm to lose the electricity.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Reference numerals: the device comprises an electromagnetic chuck 1, an electric crank arm 2, a fixed arm 2-1, an extension arm 2-2, a bending arm 2-3, a buckle plate 3, a hook part 4, a motor 5, a height sensor 6, an emergency battery 7 and forged steel 8.

Detailed Description

The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1, the utility model discloses an electromagnetic crane anti-falling device, including electromagnet 1, still include a plurality of electronic crank arms 2 of circumference equipartition in electromagnet 1 outside and be used for connecting the locking structure of all electronic crank arms, electronic crank arm 2 is folding crank arm, electronic crank arm 2 includes fixed arm 2-1, extension arm 2-2, the arm of buckling 2-3 and is used for driving motor 5 that electronic crank arm 2 expandes, fixed arm 2-1 locates the electromagnet 1 outside, motor 5 locates fixed arm 2-1, extension arm 2-2 one end is rotated and is connected fixed arm 2-1, and the other end is rotated and is connected bent arm 2-3, bent arm 2-3 connects the locking structure. When the electromagnetic chuck does not work, the electric crank arm 2 is folded outside the electromagnetic chuck 1; when the forged steel 8 is hoisted, the motor 5 drives the extension arm 2-2 to rotate until the extension arm and the fixed arm 2-1 form a straight line, the length of the extension arm 2-2 is approximately equal to the height of the forged steel 8, and the bending arm 2-3 rotates to the bottom of the transported forged steel 8 and is connected through a locking structure to form a hanging bracket, so that the electromagnetic crane can prevent the electro-lost forged steel 8 from falling.

Specifically, the length of the bending arm 2-3 is less than the radius of the electromagnetic chuck 1, and the circular locking structure used for setting up can be formed at the center of the bottom of the forged steel 8 after rotating to the bottom of the forged steel 8 transported, the locking structure comprises a buckling disc 3 and a plurality of clamping hook parts 4 used for clamping the buckling disc 3, the buckling disc 3 is arranged on any bending arm 2-3, each clamping hook part 4 is connected with one bending arm 2-3, all bending arms 2-3 connected with the clamping hook parts 4 rotate to the bottom of the forged steel 8, the bending arm 2-3 connected with the clamping hook parts 3 rotates to the bottom of the forged steel 8, and therefore all clamping hook parts 4 are clamped into the clamping disc 3 to complete locking.

Preferably, the number of the electric crank arms 2 is six, the stress is uniform, and the folding and the unfolding of the electric crank arms 2 cannot interfere with each other.

In order to ensure the rigidity of the electric crank arm 2, the electric crank arm 2 is a carbon steel crank arm.

In order not to influence whole handling process, the utility model discloses an electromagnetic crane anti-falling device still includes altitude sensor 6, altitude sensor 6 is located electromagnetic chuck 1, electromagnetic crane hoist crane forge steel 8 back, altitude sensor 6 senses and gives the expansion signal after the height that electronic crank arm 2 can expand, when electromagnetic crane will put down forge steel 8, gives folding signal after altitude is sensed to altitude sensor 6 to need not stop carelessly in the handling engineering and expand or folding electronic crank arm.

For avoiding electric crank arm 2 and electromagnetic crane to lose the electricity simultaneously, special circuit is connected to electric crank arm 2, and electric crank arm 2 still is equipped with emergency battery 7 simultaneously, emergency battery 7 connects motor 5.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.

Claims (7)

1. An anti-falling device of an electromagnetic crane comprises an electromagnetic chuck (1) and is characterized by also comprising a plurality of electric crank arms (2) which are uniformly distributed on the outer side of the electromagnetic chuck (1) in the circumference and a locking structure which is used for connecting all the electric crank arms, the electric crank arm (2) is a folding crank arm, the electric crank arm (2) comprises a fixed arm (2-1), an extension arm (2-2), a bending arm (2-3) and a motor (5) for driving the electric crank arm (2) to unfold, the fixed arm (2-1) is arranged at the outer side of the electromagnetic chuck (1), the motor (5) is arranged on the fixed arm (2-1), one end of the extension arm (2-2) is rotatably connected with the fixed arm (2-1), the other end of the extension arm is rotatably connected with the bending arm (2-3), and the bending arm (2-3) is connected with a locking structure.

2. An electromagnetic crane fall arrest device according to claim 1, characterized in that the length of the bending arm (2-3) is smaller than the radius of the electromagnetic chuck (1).

3. An electromagnetic crane fall arrest device according to claim 2, characterized in that the locking structure comprises a catch disc (3) and a plurality of catch portions (4) for catching the catch disc (3), the catch disc (3) being provided on any one of the bending arms (2-3), each catch portion (4) being connected to one of the bending arms (2-3).

4. An electromagnetic crane fall arrest device according to claim 1, characterized in that the number of electric crank arms (2) is six.

5. An electromagnetic crane fall arrest device according to claim 1, characterized in that the electric crank (2) is a carbon steel crank.

6. An electromagnetic crane fall arrest device according to claim 1, characterized in that it further comprises a height sensor (6), said height sensor (6) being provided on said electromagnetic chuck (1).

7. An electromagnetic crane fall arrest device according to claim 1, characterized in that the electric crank arm (2) further comprises an emergency battery (7), the emergency battery (7) being connected to the motor (5).

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