Telescopic electromagnetic beam-hung lifting appliance

Abstract

The utility model relates to a telescopic electromagnetic beam-hanging spreader, including two main beams, is equipped with two longitudinal end beams between main beam, two end beams can be detachably fixed in the both ends of main beam, still including longitudinal beam, two longitudinal beam's both ends can be detachably fixed on the main beam, is equipped with support beam below longitudinal beam, the top of support beam is fixed with support frame, is equipped with support wheel on support frame, support wheel roll -on fit on longitudinal beam, the top of longitudinal beam is equipped with with longitudinal beam parallelly arranged screw rod, the external thread of screw rod both ends is opposite, the both ends of screw rod rotatable assembly is equipped on longitudinal beam through bearing seat, two support frames of longitudinal beam upside are all screw connection on screw rod, and the top of longitudinal beam middle is equipped with drive mechanism for driving screw rod rotation, the bottom of two support beams is equipped with a plurality of evenly and interval arrangement electromagnet, and electromagnet can be detachably fixed in the bottom of support beam.

Description

Technical Field

[0001] This utility model belongs to the field of crane technology, and in particular relates to a telescopic electromagnetic beam lifting device. Background Technology

[0002] A crane is a multi-action lifting machine that vertically lifts and horizontally moves heavy objects within a certain range. Also known as an overhead crane, gantry crane, or gantry crane, a bridge crane is a lifting device that spans across workshops, warehouses, and material yards for material handling. Because its two ends rest on tall concrete pillars or metal supports, resembling a bridge, the bridge frame of a bridge crane runs longitudinally along tracks laid on elevated structures on both sides. It can fully utilize the space beneath the bridge frame to lift materials without being obstructed by ground equipment. It is the most widely used and numerous type of lifting machinery. When using cranes to transport or move goods, electromagnetic lifting beams are sometimes required. Currently, most electromagnetic lifting beams suspend electromagnets at the bottom of the lifting beam support frame. The position of the support frame is moved by the crane trolley, moving the electromagnet above the goods to be lifted. When the electromagnet is energized, it attracts the goods. However, in existing technology, the position of the electromagnet cannot be adjusted. Therefore, when dealing with large or small goods, the inability to adjust the electromagnet distance necessitates replacing the lifting beam with a matching one. This not only increases the workload of the workers but also reduces productivity. Utility Model Content

[0003] To address the technical problem of inconvenient replacement of existing electromagnetic beam lifting devices due to the inability to adjust the position of electromagnets, this utility model provides a telescopic electromagnetic beam lifting device. It includes two transversely parallel and spaced main beams that provide support. Two longitudinally arranged end beams are located between the main beams and are detachably fixed to both ends of the main beams. The main beams and end beams together form a rectangular support frame. Two symmetrically arranged pulley assemblies are located at the top of the main beams. Each pulley assembly includes a pulley support frame fixed to the top of the main beams, on which several pulleys are rotatably mounted. The pulleys are connected to a lifting mechanism on a crane via wire ropes, and the lifting mechanism moves the pulleys vertically using the wire ropes. It also includes two longitudinally and symmetrically arranged longitudinal beams. The lower ends of the longitudinal beams are provided with travel tracks parallel to the longitudinal beams on both sides. The longitudinal beams serve to support and fix the beams. Both ends of the two longitudinal beams can be detachably fixed to the main beam. Below the longitudinal beams are two symmetrically arranged support beams parallel to the main beam. Two support frames are fixed to the top of the support beams. Support wheels are rotatably mounted on the support frames. The support wheels are rolled and fitted on the travel tracks at the lower end of the longitudinal beams. The upper end of the support frames extends upward to the top of the longitudinal beams. The top of the longitudinal beams is provided with a lead screw parallel to the longitudinal beams. The external threads at both ends of the lead screw are opposite. The two ends of the lead screw are rotatably mounted on the longitudinal beams through bearing seats. The two support frames on the upper side of the longitudinal beams are threaded to the lead screw. The top of the longitudinal beams is provided with a drive mechanism for driving the lead screw to rotate. The drive mechanism drives the lead screw to rotate. The lead screw pushes the two support frames to move synchronously towards each other or synchronously away from each other, thereby adjusting the distance between the two support beams. The drive mechanism includes a motor bracket fixed to the top of the longitudinal beam, on which a lead screw motor is mounted. A reducer is installed between the lead screw motor and the lead screw. The power output shaft of the lead screw motor is drive-connected to the power output shaft of the reducer, and the power output shaft of the reducer is drive-connected to the lead screw. The lead screw motor is connected to a power source and a PLC controller via cables, driving the lead screw to rotate. Several evenly spaced electromagnets are installed below each of the two support beams. The electromagnets are detachably fixed to the bottom of the support beams. They are connected to a power source and a PLC controller via cables. When energized, the electromagnets become magnetic and can attract goods; when de-energized, their magnetism disappears, allowing goods to be placed down.

[0004] Both ends of the main beam are equipped with rotatable hook mechanisms. The hook mechanism includes a support base fixed on the main beam. A drive gear and a driven gear are rotatably mounted on the support base via a rotating shaft. The drive gear and the driven gear mesh with each other. A rotary motor is fixed on the support base. The power output shaft of the rotary motor is connected to the drive gear. A hook is located below the support base. The upper end of the hook is fixed on the rotating shaft near the driven gear. The rotary motor is connected to the power supply and PLC controller via a cable. When the rotary motor is started, it drives the rotating shaft and the hook on the rotating shaft to rotate at a certain angle through the drive gear and the driven gear. When it is necessary to lift other goods or accessories, the hook needs to be used. The rotary motor can be used to rotate the hook to a vertical position. When the hook is not needed, the rotary motor can be used to rotate the hook to a horizontal position with the support beam.

[0005] Preferably, the top of the main beam is provided with a cable frame for storing and retrieving cables.

[0006] Preferably, the electromagnet is connected to the power supply and the PLC controller via a cable.

[0007] The above scheme has the following advantages: The two support beams are designed with an adjustable distance. A drive mechanism rotates a lead screw, which in turn moves the two support frames synchronously towards or away from each other, thus adjusting the distance between the two support beams and consequently the distance between the electromagnets at the bottom of the support beams. This allows for adaptability to goods of different sizes, making it convenient to use and improving efficiency compared to changing lifting devices. The hook mechanism can be used to lift other goods that are not suitable for electromagnet lifting, broadening the device's applicability. When a hook is needed, a rotary motor can rotate it to a vertical position; when the hook is not needed, the motor can rotate it to a horizontal position with the support beams, without affecting the electromagnets' ability to lift goods, ensuring that the two do not interfere with each other. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a top view of the structure of this utility model; Figure 3 This is a schematic diagram of the left-side structure of this utility model; Figure 4 for Figure 1 Enlarged view of part A.

[0009] Reference numerals in the attached drawings: 1. Main beam; 2. Longitudinal beam; 3. Support beam; 4. Drive mechanism; 5. Claw mechanism; 11. End beam; 12. Pulley assembly; 121. Pulley support frame; 122. Pulley; 13. Cable frame; 31. Support frame; 32. Support wheel; 33. Lead screw; 34. Bearing seat; 35. Electromagnet; 41. Lead screw motor; 42. Reducer; 51. Support base; 52. Drive gear; 53. Driven gear; 54. Rotary motor; 55. Rotating shaft; 56. Hook. Detailed Implementation

[0010] like Figure 1-4As shown, a telescopic electromagnetic hanging beam lifting device includes two transversely parallel and spaced main beams 1, which serve as supports. Two longitudinally arranged end beams 11 are provided between the two main beams 1. The two end beams 11 are detachably fixed to both ends of the main beams 1. The main beams 1 and the end beams 11 together form a rectangular support frame. Two sets of symmetrically arranged pulley assemblies 12 are provided at the top of the main beams 1. The pulley assembly 12 includes a pulley support frame 121 fixed to the top of the main beams 1. Several pulleys 122 are rotatably mounted on the pulley support frame 121. The pulleys 122 are connected to the lifting mechanism on the crane through wire ropes. The lifting mechanism pulls the pulleys 122 to move in the vertical direction through the wire ropes. It also includes two longitudinally and symmetrically arranged longitudinal beams 2. The lower ends of the longitudinal beams 2 are provided with parallel travel tracks (not shown in the attached diagram) on both sides. The longitudinal beams 2 serve as supports and fixations. Both ends of the two longitudinal beams 2 can be detachably fixed to the main beam 1. Below the longitudinal beams 2 are two symmetrically arranged support beams 3 parallel to the main beam 1. Two support frames 31 are fixed to the top of the support beams 3. Support wheels 32 are rotatably mounted on the support frames 31. The support wheels 32 are rolled onto the travel tracks at the lower ends of the longitudinal beams 2, and the upper ends of the support frames 31 extend upwards. Extending above the longitudinal beam 2, a lead screw 33 is provided at the top of the longitudinal beam 2, parallel to the longitudinal beam 2. The external threads at both ends of the lead screw 33 are opposite. The two ends of the lead screw 33 are rotatably mounted on the longitudinal beam 2 through bearing seats 34. Two support frames 31 on the upper side of the longitudinal beam 2 are threadedly connected to the lead screw 33. A drive mechanism 4 is provided in the middle of the top of the longitudinal beam 2 to drive the lead screw 33 to rotate. The drive mechanism 4 drives the lead screw 33 to rotate, and the lead screw 33 pushes the two support frames 31 to move synchronously towards each other or synchronously away from each other, thereby adjusting the distance between the two support beams 3. The drive mechanism 4 includes a motor bracket fixed to the top of the longitudinal beam 2. A lead screw motor 41 is mounted on the motor bracket. A reducer 42 is provided between the lead screw motor 41 and the lead screw 33. The power output shaft of the lead screw motor 41 is drivenly connected to the power output shaft of the reducer 42, and the power output shaft of the reducer 42 is drivenly connected to the lead screw 33. The lead screw motor 41 is connected to the power supply and PLC controller through a cable, and the lead screw motor 41 drives the lead screw 33 to rotate. Several evenly spaced electromagnets 35 are provided below each of the two support beams 3. The electromagnets 35 are detachably fixed to the bottom of the support beams 3. The electromagnets 35 are connected to the power supply and PLC controller through cables. When the electromagnets 35 are powered on, they become magnetic and can attract goods. When the power to the electromagnets 35 is turned off, the magnetism of the electromagnets 35 disappears, and the goods can be placed down.

[0011] Both ends of the main beam 1 are equipped with rotatable hook mechanisms 5. The hook mechanism 5 includes a support base 51 fixed on the main beam 1. A drive gear 52 and a driven gear 53 are rotatably mounted on the support base 51 via a rotating shaft 55. The drive gear 52 and the driven gear 53 mesh with each other. A rotary motor 54 is fixed on the support base 51. The power output shaft of the rotary motor 54 is connected to the drive gear 52. A hook 56 is provided below the support base 51. The upper end of the hook 56 is fixed on the rotating shaft 55 near the driven gear 53. The rotary motor 54 is connected to the power supply and PLC controller via a cable. When the rotary motor 54 is started, the rotary motor 54 drives the rotating shaft 55 and the hook 56 on the rotating shaft 55 to rotate at a certain angle through the drive gear 52 and the driven gear 53. When it is necessary to lift other goods or accessories, the hook 56 needs to be used. The hook 56 can be rotated to a vertical position by the rotary motor 54. When the hook 56 is not needed, the hook 56 can be rotated to a horizontal position with the support beam 3 by the rotary motor 54.

[0012] Preferably, the top of the main beam 1 is provided with a cable frame 13 for storing and retrieving cables.

[0013] Preferably, the electromagnet 35 is connected to the power supply and the PLC controller via a cable.

[0014] Usage process: In use, this invention first adjusts the distance between the two support beams 3 according to the size of the goods to be lifted. When the distance between the two support beams 3 needs to be increased, the lead screw motor 41 is started, and the power output shaft of the lead screw motor 41 rotates clockwise. The lead screw motor 41 drives the lead screws 33 on both sides of the reducer 42 to rotate, and the lead screws 33 push the two support frames 31 to move in opposite directions along the lead screws 33, thereby increasing the distance between the two support beams 3. When the distance between the two support beams 3 needs to be decreased, the lead screw motor 41 is started, and the power output shaft of the lead screw motor 41 rotates counterclockwise. The lead screws 33 push the two support frames 31 to move in opposite directions along the lead screws 33, thereby decreasing the distance between the two support beams 3. This allows the electromagnet 35 below the support beams 3 to lift goods of different sizes. When lifting other goods or accessories, the hook 56 is required. The hook 56 can be rotated to a vertical position by the rotary motor 54. When the hook 56 is not needed, the hook 56 can be rotated to a horizontal position with the support beams 3 by the rotary motor 54.

[0015] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "top", "bottom", "horizontal", "vertical", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0016] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A telescopic electromagnetic beam lifting device, comprising two transversely parallel and spaced main beams, and two longitudinally arranged end beams between the two main beams, the two end beams being detachably fixed to both ends of the main beams, characterized in that: It also includes two longitudinally and symmetrically arranged longitudinal beams, both ends of which can be detachably fixed to the main beam. Below the longitudinal beams are two symmetrically arranged support beams parallel to the main beam. Two support frames are fixed to the top of the support beams, and support wheels are rotatably mounted on the support frames. The support wheels are rolled and fitted onto the longitudinal beams, and the upper ends of the support frames extend upwards above the longitudinal beams. At the top of the longitudinal beams are lead screws parallel to the longitudinal beams, with opposite external threads at both ends. The two ends of the lead screws are rotatably mounted on the longitudinal beams through bearing seats. The two support frames on the upper side of the longitudinal beams are threaded to the lead screws. A drive mechanism for driving the lead screws to rotate is located in the middle of the top of the longitudinal beams. Below the two support beams are several evenly spaced electromagnets, which are detachably fixed to the bottom of the support beams.

2. The telescopic electromagnetic beam lifting device according to claim 1, characterized in that: The drive mechanism includes a motor bracket fixed to the top of the longitudinal beam, a lead screw motor mounted on the motor bracket, a reducer between the lead screw motor and the lead screw, the power output shaft of the lead screw motor being drivenly connected to the power output shaft of the reducer, and the power output shaft of the reducer being drivenly connected to the lead screw.

3. The telescopic electromagnetic beam lifting device according to claim 1, characterized in that: Both ends of the main beam are equipped with rotatable hook mechanisms. The hook mechanism includes a support base fixed on the main beam. A drive gear and a driven gear are rotatably mounted on the support base via a rotating shaft. The drive gear and the driven gear mesh with each other. A rotary motor is fixed on the support base. The power output shaft of the rotary motor is connected to the drive gear. A hook is provided below the support base. The upper end of the hook is fixed on the rotating shaft near the driven gear.

4. The telescopic electromagnetic beam lifting device according to claim 1, characterized in that: The top of the main beam is provided with two sets of symmetrically arranged pulley assemblies. The pulley assembly includes a pulley support frame fixed to the top of the main beam, and several pulleys are rotatably mounted on the pulley support frame.

5. The telescopic electromagnetic beam lifting device according to claim 1, characterized in that: The top of the main beam is equipped with a cable tray for storing and retrieving cables.

6. The telescopic electromagnetic beam lifting device according to claim 1, characterized in that: The electromagnet is connected to the power supply and the PLC controller via a cable.

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