Electromagnetic chuck type electric single-beam crane

Abstract

The utility model relates to the technical field of cranes, in particular to an electromagnetic chuck type electric single-beam crane which comprises a crane main beam, a crane carriage is assembled on the crane main beam, a hoisting mechanism is mounted at the bottom of the crane carriage, an upper supporting beam is arranged below the crane main beam, and a lower supporting beam is arranged below the upper supporting beam. A swing mechanism is installed between the upper supporting beam and the lower supporting beam, an electromagnetic chuck is arranged below the lower supporting beam, a connecting rod is arranged between the lower supporting beam and the electromagnetic chuck, and the connecting rod is hinged to the electromagnetic chuck. The electromagnetic chuck is rotated through the slewing mechanism, so that the axis of the electromagnetic chuck is parallel to the adsorption surface of the goods, and the electromagnetic chuck is hinged to the connecting rod, so that the electromagnetic chuck can rotate by a certain angle under the action of suction force, and the adsorption surface of the electromagnetic chuck is attached to the adsorption surface of the goods in a self-adaptive manner; therefore, the goods can be adsorbed more firmly, and the risk that the goods fall off is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of hoist, especially an electromagnetic chuck type electric single-beam hoist. BACKGROUND

[0002] The single-beam hoist is a hoisting device for hoisting materials above a workshop, a warehouse and a material yard, and the bridge of the single-beam hoist runs longitudinally along the tracks laid on the elevated tracks on both sides, can fully utilize the space below the bridge for hoisting materials, and is not hindered by ground equipment, and is the most widely used hoisting machine.

[0003] At present, for hoisting some magnetic cargos, an electromagnetic chuck type electric single-beam hoist is generally used for adsorptive hoisting, however, when the existing hoist adsorbs the cargos placed obliquely, the adsorption surface of the electromagnetic chuck and the cargo is not consistent in angle, and the cargo cannot be completely attached to the adsorption surface during hoisting, thus, the cargo is prone to falling due to unfirm adsorption, and therefore, there are still defects and deficiencies in the prior art. SUMMARY

[0004] The utility model provides a kind of electromagnetic chuck type electric single-beam hoist to solve the problems in the background art.

[0005] To solve the above technical problems, the utility model adopts the technical scheme of: an electromagnetic chuck type electric single-beam hoist, comprising a hoist girder, both ends of the hoist girder are provided with a trolley traveling mechanism, a hoist trolley is assembled on the hoist girder, a hoisting mechanism is installed at the bottom of the hoist trolley, a horizontally arranged upper support beam is arranged below the hoist girder, both ends of the upper support beam are connected to the hoisting mechanism by a steel wire rope, a guide mechanism is installed between the upper support beam and the hoist trolley, a horizontally arranged lower support beam is arranged below the upper support beam, a slewing mechanism for controlling the rotation of the lower support beam is installed between the upper support beam and the lower support beam, a horizontally arranged electromagnetic chuck is arranged below the lower support beam, a plurality of horizontally equidistantly distributed connecting rods are arranged between the lower support beam and the electromagnetic chuck, the top end of the connecting rod is fixedly connected to the lower support beam, and the bottom end of the connecting rod is hingedly connected to the electromagnetic chuck.

[0006] Preferably, the slewing mechanism comprises a stepping motor installed on the upper support beam and an external-tooth slewing support fixedly connected to the bottom surface of the upper support beam, the output shaft of the stepping motor is coaxially fixed with a gear, the gear is engaged with the outer ring of the external-tooth slewing support, and the outer ring of the external-tooth slewing support is fixedly connected to the lower support beam.

[0007] Preferably, the guide mechanism comprises two vertically and symmetrically arranged telescopic guide columns, the top end of the telescopic guide column is fixedly connected to the hoist trolley, and the bottom end of the telescopic guide column is fixedly connected to the upper support beam.

[0008] Preferably, the connecting rod is a telescopic rod, and the telescopic rod is provided with a first spring.

[0009] Preferably, four second springs are fixedly connected between the lower support beam and the electromagnetic chuck, and the four second springs are located at four corners of the electromagnetic chuck.

[0010] Preferably, a plurality of telescopic cylinders are arranged between the lower support beam and the electromagnetic chuck, and the telescopic cylinders are vertically arranged and horizontally equidistantly distributed, and the top ends of the telescopic cylinders are fixedly connected with the lower support beam.

[0011] Preferably, a proximity switch is mounted on the electromagnetic chuck.

[0012] Preferably, pulley blocks are mounted at two ends of the top surface of the upper support beam, and the pulley blocks are connected to the lifting mechanism through a steel wire rope.

[0013] The utility model has the beneficial effects that: (1) the utility model rotates the electromagnetic chuck through the rotary mechanism, so that the axis of the electromagnetic chuck is parallel to the adsorption surface of the goods, and because the electromagnetic chuck and the connecting rod are hingedly connected, the electromagnetic chuck can rotate a certain angle under the action of the suction force, so that the electromagnetic chuck is self-adapted to closely adhere to the adsorption surface of the goods, thereby more firmly adsorbing the goods and reducing the risk of goods falling; (2) after the electromagnetic chuck lifts the goods, the telescopic end of the telescopic cylinder can abut against the electromagnetic chuck, so that the electromagnetic chuck does not shake, thereby facilitating the crane to stably hoist the goods. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is a structural schematic view of the utility model;

[0015] Fig. 2 It is a structural schematic view of the connection of the lifting mechanism, the upper support beam, the lower support beam and the electromagnetic chuck of the utility model;

[0016] Fig. 3 It is a structural schematic view of the electromagnetic chuck after rotating and self-adapted to adhere to the adsorption surface of the goods.

[0017] Mark: 1, crane girder, 2, cart walking mechanism, 3, hoist trolley, 4, lifting mechanism, 5, upper support beam, 6, pulley block, 7, steel wire rope, 8, guide mechanism, 81, telescopic guide column, 9, lower support beam, 10, rotary mechanism, 101, step motor, 102, external tooth rotary support, 103, gear, 11, electromagnetic chuck, 12, connecting rod, 13, goods, 14, first spring, 15, second spring, 16, telescopic cylinder, 17, proximity switch. DETAILED DESCRIPTION

[0018] The utility model will be further described below in combination with the drawings.

[0019] AsFigs. 1-3 As shown, this utility model provides an electromagnetic chuck-type electric single-girder crane, including a crane main beam 1, with a trolley traveling mechanism 2 at both ends of the crane main beam 1, a lifting trolley 3 mounted on the crane main beam 1, a lifting mechanism 4 installed at the bottom of the lifting trolley 3, and a horizontally arranged upper support beam 5 below the crane main beam 1. Pulley blocks 6 are installed at both ends of the top surface of the upper support beam 5, and the pulley blocks 6 are connected to the lifting mechanism 4 by steel wire ropes 7. Both ends of the upper support beam 5 are connected to the lifting mechanism 4 by steel wire ropes 7. On the structure 4, a guide mechanism 8 is installed between the upper support beam 5 and the lifting trolley 3. A horizontally arranged lower support beam 9 is provided below the upper support beam 5. A rotary mechanism 10 for controlling the rotation of the lower support beam 9 is installed between the upper support beam 5 and the lower support beam 9. A horizontally arranged electromagnetic chuck 11 is provided below the lower support beam 9. Multiple horizontally equidistant connecting rods 12 are provided between the lower support beam 9 and the electromagnetic chuck 11. The top end of the connecting rod 12 is fixedly connected to the lower support beam 9, and the bottom end of the connecting rod 12 is hinged to the electromagnetic chuck 11.

[0020] Specifically, such as Fig. 3 As shown, when hoisting cargo 13, firstly, the electromagnetic chuck 11 is rotated by the slewing mechanism 10 so that the axis of the electromagnetic chuck 11 is parallel to the adsorption surface of cargo 13. Then, the electromagnetic chuck 11 is lowered by the lifting mechanism 4. Since the electromagnetic chuck 11 and the connecting rod 12 are hinged, the electromagnetic chuck 11 can rotate a certain angle under the action of the suction force, so that the electromagnetic chuck 11 adapts to and closely adheres to the adsorption surface of cargo 13, thereby adsorbing cargo 13 more firmly and reducing the risk of cargo 13 falling.

[0021] In some embodiments, the rotary mechanism 10 includes a stepper motor 101 mounted on the upper support beam 5 and an external gear rotary support 102 fixedly connected to the bottom surface of the upper support beam 5. A gear 103 is coaxially fixed to the output shaft of the stepper motor 101, and the gear 103 meshes with the outer ring of the external gear rotary support 102. The outer ring of the external gear rotary support 102 is fixedly connected to the lower support beam 9. Specifically, in use, the stepper motor 101 drives the outer ring of the external gear rotary support 102 to rotate via the gear 103, and the outer ring of the external gear rotary support 102 drives the lower support beam 9 to rotate, thereby driving the electromagnetic chuck 11 to rotate.

[0022] In some embodiments, the guide mechanism 8 includes two vertically and symmetrically arranged telescopic guide columns 81. The top end of the telescopic guide column 81 is fixedly connected to the crane trolley 3, and the bottom end of the telescopic guide column 81 is fixedly connected to the upper support beam 5. The telescopic guide column 81 plays a guiding role, which can reduce the swaying of the cargo 13 when the crane is hoisting and improve the stability of the crane.

[0023] In some embodiments, the connecting rod 12 is a telescopic rod, and a first spring 14 is provided on the telescopic rod. Specifically, during use, when the electromagnetic chuck 11 contacts the adsorption surface of the goods 13, the telescopic end of the telescopic rod can retract and compress the first spring 14. At this time, the first spring 14 can play a buffering role to ensure the safety of the electromagnetic chuck 11 in the process of adsorbing the goods 13.

[0024] In some embodiments, four second springs 15 are fixedly connected between the lower support beam 9 and the electromagnetic chuck 11. The four second springs 15 are located at the four corners of the electromagnetic chuck 11. By setting the second springs 15, the electromagnetic chuck 11 can be prevented from shaking arbitrarily when it moves, thereby improving the stability of the electromagnetic chuck 11.

[0025] In some embodiments, a plurality of horizontally equidistant and vertically arranged telescopic cylinders 16 are provided between the lower support beam 9 and the electromagnetic chuck 11, with the top end of the telescopic cylinder 16 fixedly connected to the lower support beam 9. Specifically, after the electromagnetic chuck 11 lifts the goods 13, the telescopic end of the telescopic cylinder 16 can press against the electromagnetic chuck 11, thus preventing the electromagnetic chuck 11 from shaking and facilitating stable lifting of the goods 13 by the crane.

[0026] In some embodiments, a proximity switch 17 is installed on the electromagnetic chuck 11, which is used to detect the presence or absence of the cargo 13. Specifically, a control system is installed on the crane, the proximity switch 17 is electrically connected to the control system, and the electromagnetic chuck 11 is electrically connected to the control system. The connection relationships between the control system, the proximity switch 17 and the control system, and the electromagnetic chuck 11 and the control system are all prior art and will not be described in detail here. When hoisting the cargo 13, the lifting mechanism 4 controls the electromagnetic chuck 11 to descend and approach the cargo 13. The proximity switch 17 detects the cargo 13 and transmits a signal to the control system. Subsequently, the control system activates the electromagnetic chuck 11 to attract the cargo 13. By setting the proximity switch 17, it is easier for the electromagnetic chuck 11 to attract the cargo 13.

[0027] The above embodiments can be combined with each other.

[0028] The above embodiments are not intended to limit the shape, material, structure, etc. of this utility model in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the protection scope of this utility model.

Claims

1. An electromagnetic chuck-type electric single-girder crane, comprising a crane main beam, a crane trolley mounted on the crane main beam, and a lifting mechanism installed at the bottom of the crane trolley, characterized in that: The crane's main beam has a horizontally arranged upper support beam below it. Both ends of the upper support beam are connected to the hoisting mechanism by steel wire ropes. A guide mechanism is installed between the upper support beam and the crane trolley. Below the upper support beam is a horizontally arranged lower support beam. A slewing mechanism for controlling the rotation of the lower support beam is installed between the upper and lower support beams. Below the lower support beam is a horizontally arranged electromagnetic chuck. Multiple horizontally equidistant connecting rods are provided between the lower support beam and the electromagnetic chuck. The top of the connecting rod is fixedly connected to the lower support beam, and the bottom of the connecting rod is hinged to the electromagnetic chuck.

2. The electromagnetic chuck type electric single-girder crane according to claim 1, characterized in that: The rotary mechanism includes a stepper motor mounted on the upper support beam and an external gear rotary support fixedly connected to the bottom surface of the upper support beam. The output shaft of the stepper motor is coaxially fixed with a gear, which meshes with the outer ring of the external gear rotary support. The outer ring of the external gear rotary support is fixedly connected to the lower support beam.

3. The electromagnetic chuck type electric single-girder crane according to claim 1, characterized in that: The guiding mechanism includes two vertically and symmetrically arranged telescopic guide columns. The top of the telescopic guide columns is fixedly connected to the crane trolley, and the bottom of the telescopic guide columns is fixedly connected to the upper support beam.

4. The electromagnetic chuck type electric single-girder crane according to claim 1, characterized in that: The connecting rod is a telescopic rod, and a first spring is provided on the telescopic rod.

5. The electromagnetic chuck type electric single-girder crane according to claim 1, characterized in that: Four second springs are fixedly connected between the lower support beam and the electromagnetic chuck, and the four second springs are located at the four corners of the electromagnetic chuck.

6. The electromagnetic chuck type electric single-girder crane according to claim 1, characterized in that: Several horizontally equidistant and vertically arranged telescopic cylinders are provided between the lower support beam and the electromagnetic chuck, and the top of the telescopic cylinders is fixedly connected to the lower support beam.

7. The electromagnetic chuck type electric single-girder crane according to claim 1, characterized in that: The electromagnetic chuck is equipped with a proximity switch.

8. The electromagnetic chuck type electric single-girder crane according to claim 1, characterized in that: Both ends of the top surface of the upper support beam are equipped with pulley blocks, which are connected to the lifting mechanism by steel wire ropes.

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