Rotary telescopic electromagnetic lifting appliance

Abstract

The utility model discloses a rotary telescopic electromagnetic lifting appliance which comprises a balance beam, the middle of the balance beam is movably connected with a main beam through a rotary motor and a rotary assembly, the middle of the bottom end of the main beam is connected with a lifting hook assembly through a rib plate, and telescopic beams are symmetrically arranged in the two ends of the main beam. The main beam is movably connected with the telescopic beam through a telescopic motor, and the lower portion of the main beam and the lower portion of the telescopic beam are connected with the corresponding electromagnets through chains. The rotating motor drives the transmission shaft, the rotating transmission gear and the rotating piece of the slewing bearing, so that the free rotating hoisting of the main beam of the hoisting tool at the angle of more than 270 degrees is realized; the telescopic beams are matched in the two ends of the main beam and the guide device, so that the telescopic beams can stretch and retract easily and freely in the guide direction; and a built-in encoder of the telescopic motor can feed back the telescopic position of the actual telescopic beam of the lifting appliance in real time, so that the problems of inconsistent wire proportions, unbalanced lifting appliance fixing points or different weights of two ends of steel in the lifting process of the lifting appliance are greatly solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic spreaders, in particular to a rotating and telescopic electromagnetic spreader. Background Art

[0002] In recent years, with the rapid development of industrialization, improving the efficiency of lifting equipment has become a common concern for designers. As a key load-bearing component of lifting equipment, electromagnetic spreaders are an ideal lifting tool for lifting magnetic materials such as steel in industries such as metallurgy, mining, shipbuilding, and transportation. They can reduce the workload of loading and unloading workers while significantly improving production efficiency.

[0003] However, in actual workshop or warehouse operations, the volume and mass of goods are often relatively large, the proportions of stored bars and wires are different, and the storage locations are not necessarily neatly arranged in a regular, sequential, and directional manner. Traditional electromagnetic lifters can only achieve translation in the same direction within a plane when carrying heavy objects, such as the front-to-back direction or the left-to-right direction. The lifters cannot achieve rotation at a certain angle within the plane. In addition, traditional electromagnetic lifters are fixed in length and cannot adapt to bars and wires of different lengths. If the lifting device fixing point is unbalanced or the weight of the two ends of the steel is different, it is very easy for the lifting process to tilt. Therefore, the same lifting equipment needs to switch the corresponding lifter for lifting. Frequent lifter switching not only affects work efficiency, but also brings safety hazards and increases maintenance costs.

[0004] There is currently no effective solution to the above problems. Utility Model Content

[0005] In response to the above technical problems in the related art, the present invention proposes a rotating and telescopic electromagnetic spreader, which solves the problem of low working efficiency and great safety hazards caused by the singleness of traditional electromagnetic spreaders, and can overcome the above-mentioned shortcomings of the existing technology.

[0006] In order to achieve the above technical purpose, the technical solution of the utility model is implemented as follows:

[0007] A rotating telescopic electromagnetic hoist includes a balance beam, the middle portion of which is movably connected to a main beam via a rotating motor and a rotating assembly, the middle portion of the bottom end of the main beam is connected to a hook assembly via a rib plate, telescopic beams are symmetrically provided at both ends of the main beam, the main beam is movably connected to the telescopic beam via a telescopic motor, and the main beam and the lower portion of the telescopic beam are both connected to corresponding electromagnets via chains.

[0008] Furthermore, the balance beam as a whole is a cross structure, and the balance beam is welded from plates into an internal hollow structure. The rotating motor is provided inside the balance beam, and pulley groups are provided at the four corners of the top of the balance beam. The four pulleys form an orthogonal cross arrangement, and a cable basket is provided in the middle of the top of the balance beam.

[0009] Furthermore, the rotating assembly includes a flange plate, the top of the flange plate is connected to the transmission seat through the motor seat, the transmission seat is connected to the transmission shaft through a bearing, the top of the transmission seat and the upper end of the transmission shaft are both connected to the rotating motor, the bottom end of the transmission shaft is connected to the rotating transmission gear through a key, the bottom end of the flange plate is connected to the fixed part of the slewing support, the rotating part in the slewing support is meshed with the rotating transmission gear, the rotating part in the slewing support is connected to the mounting plate, the bottom end of the mounting plate is connected to the main beam, and a motor support plate is provided between the flange plate and the rotating motor.

[0010] Furthermore, upper guide devices and telescopic motors are provided at both ends of the upper part of the main beam, and lower guide devices and crossbeam support feet are provided at the lower part of the main beam. The upper guide devices correspond to the corresponding positions of the lower guide devices, and the bottom ends of the crossbeam support feet are provided with support foot plates.

[0011] Furthermore, a telescopic transmission gear is provided at the end of the main beam through a fixed gear seat, and the telescopic motor is movably connected to the telescopic beam through the telescopic transmission gear; two guide rails are provided on the upper part of the telescopic beam, and a telescopic rack is provided between the guide rails, and the guide rails are used in conjunction with the upper guide device, and the telescopic rack is engaged with the telescopic transmission gear, and limit blocks are provided on both sides of the telescopic beam.

[0012] Furthermore, both the main beam and the telescopic beam are provided with ear plates, the ear plates are connected to lifting ears through chains, and the lifting ears are connected to electromagnets.

[0013] Furthermore, the rotating motor and the telescopic motor have built-in encoders.

[0014] Beneficial effects of the utility model:

[0015] The electromagnetic spreader used in this utility model can realize the rotation of the main beam through the slewing bearing in the rotating assembly. The slewing bearing fixing part is fixed to the balance beam, and the slewing bearing rotating part is fixed to the main beam. The rotating motor drives the transmission shaft, the rotating transmission gear and the rotating part of the slewing bearing, thereby realizing the free rotation of the spreader main beam over 270 degrees for lifting, effectively solving the problem of irregular and uneven storage position of the hoisted objects.

[0016] Two parallel guide rails are provided at the upper end of the telescopic beam to cooperate with the double rollers of the upper guide device. There is a protruding rim on the inner side of the roller of the upper guide device, which is just stuck on the inner side of the two guide rails. Under the action of the rim, the guide rail guides the telescopic beam to extend and contract in a straight line. There is no rim on the inner side of the roller of the lower guide device. The telescopic beam is connected to the roller of the lower guide device in a rolling manner. The telescopic beam is equipped inside the two ends of the main beam to achieve a rolling connection with the guide device, which can effectively reduce the wear caused by friction during the extension and retraction of the spreader, greatly extending the service life of the spreader. At the same time, the gap between the guide devices at the telescopic beam can be adjusted to effectively ensure that the telescopic beam can extend and retract in the guide direction easily, efficiently and reliably.

[0017] The telescopic rack at the top of the telescopic beam is located between the two guide rails and meshes with the telescopic transmission gear. The telescopic transmission gear drives the telescopic beam to move back and forth through the forward and reverse rotation of the telescopic motor, realizing the extension and contraction of the telescopic beam. At the same time, the built-in encoder of the telescopic motor can provide real-time feedback on the actual telescopic position of the spreader's telescopic beam. The control system can control the extension and contraction of the left and right telescopic beams in real time to adjust the spreader's lifting length and the balance of the load. The maximum extension can be up to 10m and the shortest can be shortened to 7.5m. This greatly solves problems such as inconsistent wire ratios, unbalanced spreader fixing points, or different weights at both ends of the steel during the spreader's lifting process.

[0018] By setting the pulley blocks so that opposite sides are parallel and adjacent sides are installed vertically on the balance beam, when the spreader is connected to the crane's steel cable through the pulley blocks, the four pulleys form an orthogonal cross arrangement, and the torques they are subjected to are perpendicular to each other. Even if the lifting points are unevenly stressed, they will not tilt. When the center of gravity of the hoisted object deviates from the center of rotation, it can maintain smooth rotation, effectively ensuring the stability and safety of the entire spreader during rotation and extension. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic structural diagram of a rotating and telescopic electromagnetic spreader according to an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of the balance beam structure of the rotating and telescopic electromagnetic spreader according to an embodiment of the present utility model;

[0022] Figure 3 This is a schematic structural diagram of a rotating assembly of a rotating and telescopic electromagnetic spreader according to an embodiment of the present utility model;

[0023] Figure 4 This is a schematic diagram of the connection between the telescopic beam and the main beam of the rotating telescopic electromagnetic spreader according to an embodiment of the present utility model;

[0024] Figure 5 This is a cross-sectional schematic diagram of the cooperation between the guide device and the guide rail of the rotating and telescopic electromagnetic spreader according to an embodiment of the present utility model;

[0025] Figure 6 This is a schematic diagram of the electromagnet hoisting of the rotary telescopic electromagnetic hoist according to an embodiment of the present utility model;

[0026] In the figure: 1. Balance beam; 11. Cable basket; 12. Pulley block; 2. Rotating motor; 3. Rotating assembly; 31. Drive shaft; 32. Drive seat; 33. Motor seat; 34. Flange plate; 35. Slewing bearing; 36. Mounting plate; 37. Rotating transmission gear; 38. Motor support plate; 4. Main beam; 41. Upper guide device; 42. Telescopic motor; 43. Telescopic transmission gear; 44. Lower guide device; 45. Crossbeam support foot; 46. Support foot plate; 5. Hook assembly; 6. Telescopic beam; 61. Telescopic rack; 62. Guide rail; 63. Limit block; 7. Electromagnet; 71. Lifting ear; 8. Ear plate; 9. Chain. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0028] like Figure 1-6 As shown, a rotary telescopic electromagnetic spreader according to an embodiment of the present invention includes a balance beam 1, wherein the four corners of the top of the balance beam 1 are connected to a pulley block 12 by bolts, the middle of the top of the balance beam 1 is connected to a cable basket 11 by welding, a rotating motor 2 is provided inside the balance beam 1, and the bottom end of the balance beam 1 is connected to a rotating assembly 3 by bolts;

[0029] The rotating assembly 3 includes a transmission shaft 31, which is fixed in a transmission seat 32 through a bearing. The upper end of the transmission shaft 31 is connected to the rotating motor 2 through a key, and the lower end of the transmission shaft 31 is connected to the rotating transmission gear 37. The rotating motor 2 is connected to the transmission seat 32 through bolts. The lower end of the transmission seat 32 is connected to the motor seat 33 through bolts. The lower end of the motor seat 33 is connected to the flange plate 34 through bolts. The upper end of the flange plate 34 is fixed to the balance beam 1. The lower end of the flange plate 34 is connected to the fixing part of the slewing support 35 through bolts. The rotating part in the slewing support 35 is meshed with the rotating transmission gear 37. The rotating part in the slewing support 35 is connected to the mounting plate 36 through bolts. The bottom end of the mounting plate 36 is connected to the main beam 4 through welding.

[0030] The main beam 4 is connected to the hook assembly 5 through a rib plate, the main beam 4 is connected to the upper guide device 41 through bolts, the main beam 4 is connected to the telescopic motor 42 through bolts, the main beam 4 is connected to the telescopic transmission gear 43 through a bolt-fixed gear seat, the main beam 4 is connected to the lower guide device 44 through bolts, and the lower end of the main beam 4 is provided with a crossbeam support foot 45 and a support foot plate 46. The main beam 4 is connected to the telescopic beam 6 through the rollers of the upper and lower guide devices by rolling;

[0031] The upper end of the telescopic beam 6 is connected to the double guide rails 62 by screws. The guide rails 62 cooperate with the rollers of the upper guide device. A telescopic rack 61 is provided on the upper end of the telescopic beam 6 between the two guide rails 62. The telescopic rack 61 is engaged with the telescopic transmission gear 43. Limit blocks 63 are welded on both sides of the telescopic beam 6.

[0032] Ear plates 8 are welded on the main beam 4 and the telescopic beam 6. The ear plates 8 are connected to the chain 9 through an axle pin. The chain 9 is connected to the lifting lug 71 through an axle pin. The lifting lug 71 is connected to the electromagnet 7 by welding. The rotary motor 2 and the telescopic motor 42 have built-in encoders.

[0033] like Figure 1 、 2 As shown, the balance beam 1 is a cross structure as a whole. The balance beam 1 is hollow inside by welding of plates. Reinforcing ribs are provided at the welding points of the balance beam 1. The four corners of the top of the balance beam 1 are connected to the pulley block 12 by bolts. The four pulley blocks 12 are arranged in an orthogonal cross. The directions of the pulley blocks 12 are parallel to the opposite sides and perpendicular to the adjacent sides. The middle part of the top of the balance beam 1 is connected to the cable basket 11 by welding. A rotating motor 2 is provided in the balance beam 1. A reduction mechanism is provided on the rotating motor 2. The rotating motor 2 is connected to the rotating component 3 in cooperation and fixed with bolts.

[0034] like Figure 1 、 3As shown, the rotating assembly 3 includes a transmission shaft 31, which is fixed in the transmission seat 32 through a bearing. The upper and lower ends of the transmission shaft 31 are respectively connected to the rotating motor 2 and the rotating transmission gear 37 through keys. The transmission seat 32 is connected to the motor seat 33 through bolts. The top plate and the bottom plate of the motor seat 33 are connected by a cylinder and a rib plate. The lower end of the motor seat 33 is connected to the flange plate 34 through bolts. The flange plate 34 is fixed to the balance beam 1 through bolts. The upper end of the flange plate 34 is provided with a motor support plate 38. The lower end of the flange plate 34 is connected to the fixed part of the slewing support 35 through bolts. The rotating part of the slewing support 35 is meshed with the rotating transmission gear 37. The lower end of the rotating part of the slewing support 35 is connected to the mounting plate 36 through bolts, and the mounting plate 36 is fixed to the main beam 4 by welding.

[0035] like Figure 4 、 5 As shown, the main beam 4 is a quadrilateral long steel pipe with symmetry at both ends. A hook assembly 5 is fixed to the middle of the main beam 4 through a rib plate. An upper guide device 41 and a lower guide device 44 are fixed to both ends of the main beam 4 by bolts. A telescopic motor 42 and a telescopic transmission gear 43 are fixed to both ends of the main beam 4 by bolts. The shaft gear of the telescopic motor 42 is engaged with the telescopic transmission gear 43. Both ends of the main beam 4 are rollingly connected to the telescopic beam 6 through the guide device. The lower end of the main beam 4 is provided with a crossbeam support foot 45 and a support foot plate 46. The upper end of the telescopic beam 6 is provided with two parallel guide rails 62 connected to the upper guide device 41. The double rollers cooperate, and there is a protruding rim on the inner side of the roller of the upper guide device 41, which is just stuck on the inner side of the two guide rails 62. The guide rail 62 guides the telescopic beam 6 to extend and contract in a straight direction under the force of the rim. There is no rim on the inner side of the roller of the lower guide device 44. The telescopic beam 6 is rolled on the roller of the lower guide device 44. A telescopic rack 61 is provided at the upper end of the telescopic beam 6, which is between the two guide rails 62 and meshes with the telescopic transmission gear 43. The telescopic transmission gear 43 drives the extension and contraction of the telescopic beam 6 through the forward and reverse rotation of the telescopic motor 42. Limit blocks 63 are provided on both sides of the telescopic beam 6.

[0036] like Figure 6 As shown, the electromagnet 7 is in the shape of a cuboid, with a lifting lug 71 welded to the upper end of the electromagnet 7. The lifting lug 71 is connected to the chain 9 through an axle pin, and the chain 9 is connected to the lug plate 8 through an axle pin. The lug plate 8 is fixed to the main beam 4 and the telescopic beam 6 by welding.

[0037] In order to facilitate understanding of the above technical solutions of the present invention, the above technical solutions of the present invention are described in detail below through specific usage methods.

[0038] During specific use, according to the rotating telescopic electromagnetic sling described in the utility model, the crane is connected to the pulley group of the sling through a steel cable, and the four pulleys are arranged in an orthogonal cross with the opposite sides parallel and the adjacent sides vertical. The torques they receive are perpendicular to each other, and even if the lifting points are unevenly stressed, they will not tilt. When the center of gravity of the hoisted object deviates from the rotation center, it can maintain stable rotation. When the sling is rotated for lifting, the control system first obtains the rotation angle of the rotating motor and calculates the real-time angle of the main beam. According to the placement angle of the hoisted object and the transmission ratio between the reduction mechanisms, the rotating motor of the sling is controlled to work at the set rotation speed and rotation angle. By driving the rotating part of the slewing support on the rotating assembly to rotate, the required angle of rotation of the main beam and the telescopic beam is achieved, thereby solving the problem of irregular storage. and the problems of lifting and arranging objects in an orderly manner after lifting; when the length ratio of the wire rods of the hoisting objects is different, the control system first obtains the rotation angle of the telescopic motor through the encoder, calculates the telescopic distance and telescopic direction required for the left and right telescopic beams, and controls the telescopic motor of the spreader according to the length ratio of the hoisting objects and the transmission ratio between the reduction mechanisms. The rack on the telescopic beam is driven by the telescopic transmission gear, so that the telescopic beam is extended and contracted on the guide of the guide device, so as to realize the lifting of objects with different length ratios; when the fixed point of the spreader is unbalanced or the weight of the two ends of the steel is different, the control system can control the telescopic beam on the overweight side to contract the corresponding distance, and the telescopic beam on the underweight side to extend the corresponding distance, so as to realize the adjustment of the lifting center and control the overall balance of the spreader.

[0039] In summary, with the help of the above technical solution of the present invention, the transmission shaft, the rotating transmission gear and the rotating parts of the slewing support are driven by the rotating motor, thereby realizing the free rotation of the main beam of the spreader over 270 degrees for lifting, effectively solving the problem of irregular and uneven storage positions of the suspended objects; through the cooperation of the guide rail and the double rollers of the upper guide device, the telescopic beam is matched with the internal of the two ends of the main beam and the guide device to realize rolling connection, which can effectively reduce the wear of the spreader caused by friction during the extension and retraction process, greatly extending the life of the spreader, and at the same time, the gap between the guide devices at the telescopic beam can be adjusted to effectively ensure that the telescopic beam can be easily extended and retracted in the guide direction It is easy, efficient and reliable. The built-in encoder of the telescopic motor can provide real-time feedback on the actual telescopic position of the telescopic beam of the spreader. The control system can control the extension and contraction of the left and right telescopic beams in real time to adjust the lifting length of the spreader and the balance of the load. This greatly solves problems such as inconsistent wire ratios, unbalanced fixing points of the spreader, or different weights at both ends of the steel during the lifting process of the spreader. The four pulleys are arranged in an orthogonal cross, and the torques they receive are perpendicular to each other. Even if the lifting points are unevenly stressed, they will not tilt. When the center of gravity of the load deviates from the rotation center, it can maintain smooth rotation, effectively ensuring the stability and safety of the entire spreader during rotation and extension.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rotating and telescopic electromagnetic spreader, characterized in that: The invention comprises a balance beam (1), wherein the middle portion of the balance beam (1) is movably connected to the main beam (4) via a rotating motor (2) and a rotating assembly (3), the middle portion of the bottom end of the main beam (4) is connected to the hook assembly (5) via a rib plate, telescopic beams (6) are symmetrically provided at both ends of the main beam (4), the main beam (4) is movably connected to the telescopic beam (6) via a telescopic motor (42), and the lower portions of the main beam (4) and the telescopic beam (6) are connected to corresponding electromagnets (7) via corresponding ear plates (8) and chains (9).

2. The rotary and telescopic electromagnetic spreader according to claim 1, characterized in that: The balance beam (1) is a cross structure as a whole. The balance beam (1) is welded from plates into a hollow structure. The rotating motor (2) is provided inside the balance beam (1). Pulley blocks (12) are provided at the four corners of the top of the balance beam (1). The four pulley blocks (12) are arranged in an orthogonal cross. A cable basket (11) is provided in the middle of the top of the balance beam (1).

3. The rotary and telescopic electromagnetic spreader according to claim 1, characterized in that: The rotating assembly (3) includes a flange plate (34), the top end of the flange plate (34) is connected to the transmission seat (32) through the motor seat (33), the transmission seat (32) is connected to the transmission shaft (31) through a bearing, the top end of the transmission seat (32) and the upper end of the transmission shaft (31) are both connected to the rotating motor (2), the bottom end of the transmission shaft (31) is connected to the rotating transmission gear (37) through a key, the bottom end of the flange plate (34) is connected to the fixed part of the slewing support (35), the rotating part in the slewing support (35) is meshed with the rotating transmission gear (37), the rotating part in the slewing support (35) is connected to the mounting plate (36), the bottom end of the mounting plate (36) is connected to the main beam (4), and a motor support plate (38) is provided between the flange plate (34) and the rotating motor (2).

4. The rotary and telescopic electromagnetic spreader according to claim 1, characterized in that: Both ends of the upper portion of the main beam (4) are provided with an upper guide device (41) and a telescopic motor (42); the lower portion of the main beam (4) is provided with a lower guide device (44) and a crossbeam support foot (45); the upper guide device (41) corresponds to the position of the corresponding lower guide device (44); and the bottom end of the crossbeam support foot (45) is provided with a support foot plate (46).

5. The rotary and telescopic electromagnetic spreader according to claim 4, characterized in that: The end of the main beam (4) is also provided with a telescopic transmission gear (43) through a fixed gear seat, and the telescopic motor (42) is movably connected to the telescopic beam (6) through the telescopic transmission gear (43); two guide rails (62) are provided on the upper part of the telescopic beam (6), and a telescopic rack (61) is provided between the guide rails (62). The guide rails (62) are used in conjunction with the upper guide device (41), and the telescopic rack (61) is meshed with the telescopic transmission gear (43). Limit blocks (63) are provided on both sides of the telescopic beam (6).

6. The rotary and telescopic electromagnetic spreader according to claim 1, characterized in that: Both the main beam (4) and the telescopic beam (6) are provided with ear plates (8), the ear plates (8) are connected to the lifting lugs (71) via chains (9), and the lifting lugs (71) are connected to the electromagnets (7).

7. The rotary and telescopic electromagnetic spreader according to claim 1, characterized in that: The rotating motor (2) and the telescopic motor (42) have built-in encoders.

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