Steel net rack hoisting device with good stabilizing effect

Abstract

The invention relates to the technical field of steel net rack hoisting, in particular to a steel net rack hoisting device with a good stabilizing effect. A steel net rack hoisting device with a good stabilizing effect comprises a cross beam, connecting seats, steel cables and the like, the connecting seats are fixedly connected to the top of the cross beam in a bilateral symmetry mode, the steel cables are connected to the two connecting seats, a hoisting ring is fixedly connected between the upper ends of the two steel cables, adjusting assemblies are arranged on the cross beam in a bilateral symmetry mode, and connecting assemblies are arranged on the adjusting assemblies. Longitudinal beams are arranged on the two connecting assemblies. The steel net rack is uniformly stressed through multi-point hoisting, deformation is reduced, the hoisting force of the longitudinal beam is monitored in real time through the pressure sensor, the position of the longitudinal beam is adjusted through the control module, the steel net rack is rapidly adjusted to be in the horizontal state, the gravity center position of the steel net rack does not need to be calculated before hoisting, only simple visual inspection is needed, time and manpower are greatly saved, and the hoisting efficiency is improved. And in addition, the longitudinal beams can be detached, and transportation is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of steel grid hoisting, and in particular to a steel grid hoisting device with good stabilization effect. Background Art

[0002] The in-situ expansion installation technology for large-span steel grid roofs is an innovative construction technique that combines high-altitude in-situ unit installation methods with a gradual expansion assembly strategy. The specific operation process is as follows: first, a steel grid module is assembled on the ground. Then, using a lifting device, this module is precisely lifted to the installation location and properly installed. After that, the next steel grid module is assembled on the ground. After assembly, this module is precisely spliced ​​with the installed module. Through this cycle, the entire large-span steel grid is gradually installed.

[0003] Lifting the steel grid modules requires specialized lifting equipment. However, existing lifting equipment has limitations in practical application. Before installation, workers must devote considerable time and effort to complex calculations to determine the center of gravity of the steel grid. Subsequently, the lifting equipment must be meticulously adjusted based on these calculations to ensure the steel grid maintains horizontal balance during the lifting process, minimizing deformation. This series of operations is not only tedious but also requires a high level of professional skills and computational ability, making the entire process time-consuming and labor-intensive. Summary of the Invention

[0004] In order to overcome the above-mentioned shortcomings in the prior art, the present invention provides a steel grid lifting device with good stability.

[0005] The technical solution is: a steel grid lifting device with good stability, including a crossbeam, a connecting seat, a steel cable, a lifting ring, an adjustment component, a connecting component, a longitudinal beam, a detection component and a lifting component. The top of the crossbeam is symmetrically fixed with a connecting seat, the two connecting seats are connected to steel cables, and the upper ends of the two steel cables are fixedly connected with a lifting ring. Adjustment components are symmetrically arranged on the crossbeam, the adjustment components are each provided with a connecting component, and the two connecting components are each provided with a longitudinal beam. The connecting component is used to realize a quick-release connection between the longitudinal beam and the adjusting component, the adjusting component is used to adjust the spacing between the two connecting components to adjust the spacing between the two longitudinal beams, and the connecting component is also provided with a detection component for detecting the lifting load of the longitudinal beam. A plurality of lifting components for lifting the steel grid are arranged at intervals on the bottom of the longitudinal beam.

[0006] Furthermore, the adjustment component includes an I-beam, a screw, a dual-axis motor and a mounting frame. The I-beam is symmetrically arranged for sliding inside the crossbeam. The two I-beams are threadedly connected to each other on one side. A dual-axis motor is installed in the middle of the crossbeam. The two output shaft ends of the dual-axis motor are respectively fixedly connected to the adjacent screw ends, and the ends of the two I-beams that are away from each other are fixedly connected to the mounting frame.

[0007] Furthermore, the connecting assembly includes a sliding seat, a vertical plate, a horizontal plate, a U-shaped limit plate and a reset spring a. The two mounting frames are slidably provided with a sliding seat, and the two sliding seats are symmetrically slidably provided with vertical plates. The tops of the two adjacent vertical plates are fixedly connected with a horizontal plate, and the two longitudinal beams are respectively fixedly connected between the bottoms of the two adjacent vertical plates. The top panels of the two mounting frames are slidably provided with a U-shaped limit plate, and two reset springs a are connected at intervals between the two U-shaped limit plates and the adjacent mounting frames.

[0008] Furthermore, the detection component includes a pressure sensor, a hydraulic cylinder, a top plate and a control module. A pressure sensor is embedded in the middle of the bottom of the two horizontal plates, and hydraulic cylinders are symmetrically installed on the two sliding seats. A top plate is fixedly connected between the ends of the piston rods of the two adjacent hydraulic cylinders. The top plate is in contact with the adjacent pressure sensors, and a control module is installed in the middle of the top of the beam.

[0009] Furthermore, the lifting assembly includes a mounting seat, a trapezoidal limit block, a pull plate, a return spring b, a clamping plate, a steel cable and a hook. Multiple mounting seats are arranged at intervals at the bottom of the two longitudinal beams. Trapezoidal limit blocks are slidably arranged on the front and rear panels of the mounting seat. The two adjacent trapezoidal limit blocks are fixedly connected to a pull plate on the side away from each other. Two return springs b are connected between the pull plate and the mounting seat. Clamping plates are slidably arranged in the mounting seat. The bottom of the clamping plates is fixedly connected to a steel cable, and the lower end of the steel cable is fixedly connected to a hook.

[0010] Furthermore, it also includes an extension beam, a connecting plate and a strong bolt. An extension beam is provided on the front and rear sides of the two longitudinal beams. The side of the extension beam close to the adjacent longitudinal beam is symmetrically fixedly connected with a connecting plate. Four strong bolts are arranged at intervals between the two adjacent connecting plates, and the fixed connection of the connecting plate and the longitudinal beam is achieved by the strong bolts.

[0011] Furthermore, it also includes a short shaft, a U-shaped limit rod and a torsion spring. Each hook is fixedly connected to a short shaft symmetrically in the front and back, a U-shaped limit rod is rotatably connected between two adjacent short shafts, and a torsion spring is connected between the U-shaped limit rod and the adjacent short shafts.

[0012] Furthermore, it also includes a U-shaped mounting plate and running wheels. The bottoms of the two longitudinal beams are fixedly connected with two U-shaped mounting plates in a front-to-rear interval manner, and the bottoms of the two U-shaped mounting plates are fixedly connected with running wheels in a left-right symmetrical manner.

[0013] Furthermore, it also includes a fixed plate, a heightening frame, a U-shaped insertion rod and a magnetic block. Two fixed plates are symmetrically fixedly connected to the outer walls on the front and rear sides of the beam. The four adjacent fixed plates are all slidably provided with a heightening frame. The two heightening frames are both slidably inserted with a U-shaped insertion rod. The U-shaped insertion rod can also pass through the adjacent fixed plates. Two magnetic blocks are fixedly connected to the U-shaped insertion rod.

[0014] Furthermore, the traveling wheel (92) is a universal wheel.

[0015] The beneficial effects are as follows: the present invention makes the steel grid evenly stressed and reduces deformation through multi-point lifting, uses pressure sensors to monitor the lifting force of the longitudinal beams in real time, adjusts the position of the longitudinal beams through the control module, and quickly adjusts the steel grid to a horizontal state. There is no need to calculate the center of gravity position of the steel grid before lifting, only a simple visual inspection is required, which greatly saves time and manpower, improves installation efficiency and convenience, and the longitudinal beams can be disassembled for easy transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the screw, dual-axis motor and mounting frame of the present invention.

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the sliding seat, vertical plate and horizontal plate of the present invention.

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the U-shaped limiting plate, pressure sensor and hydraulic cylinder of the present invention.

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the mounting seat, trapezoidal limiting block and pull plate of the present invention.

[0021] Figure 6 It is a schematic diagram of the three-dimensional structure of the extension beam, connecting plate and strong bolts of the present invention.

[0022] Figure 7 It is a schematic diagram of the three-dimensional structure of the short shaft, U-shaped limit rod and torsion spring of the present invention.

[0023] Figure 8 It is a schematic diagram of the three-dimensional structure of the fixing plate, the raising frame and the U-shaped insertion rod of the present invention.

[0024] Reference numerals: 1_crossbeam, 2_connecting seat, 21_steel cable, 22_lifting ring, 31_I-beam, 32_screw, 33_dual-axis motor, 34_mounting frame, 41_sliding seat, 42_vertical plate, 43_cross plate, 44_longitudinal beam, 45_U-shaped limit plate, 46_reset spring a, 51_pressure sensor, 52_hydraulic cylinder, 53_top plate, 54_control module, 61_mounting seat, 62_trapezoidal limit block, 63_pull plate, 631_reset spring b, 64_clip plate, 65_steel cable, 66_hook, 71_extension beam, 72_connecting plate, 73_strong bolt, 81_short shaft, 82_U-shaped limit rod, 83_torsion spring, 91_U-shaped mounting plate, 92_travel wheel, 101_fixing plate, 102_heightening frame, 103_U-shaped plug rod, 104_magnetic block. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0026] Example: A steel grid hoisting device with good stability, such as Figures 1-8 As shown, it includes a crossbeam 1, a connecting seat 2, a steel cable 21, a lifting ring 22, an adjusting component, a connecting component, a longitudinal beam 44, a detection component and a lifting component. The connecting seat 2 is welded and fixed symmetrically on the top of the crossbeam 1. The two connecting seats 2 are connected to the steel cables 21. The upper ends of the two steel cables 21 are fixedly connected with a lifting ring 22. The crossbeam 1 is symmetrically provided with adjusting components. The adjusting components are provided with connecting components. The two connecting components are provided with longitudinal beams 44. The connecting components are used to realize a quick-release fixed connection between the longitudinal beam 44 and the adjusting components. The adjusting components are used to adjust the spacing between the two connecting components to adjust the spacing between the two longitudinal beams 44. The connecting components are also provided with a detection component for detecting the lifting load of the longitudinal beam 44. A plurality of lifting components for lifting the steel grid module are provided at intervals on the bottom of the longitudinal beam 44.

[0027] like Figure 1 and Figure 2 As shown, the adjustment component includes an I-beam 31, a screw 32, a dual-axis motor 33 and a mounting frame 34. The I-beam 31 is symmetrically slidingly arranged inside the crossbeam 1. The two I-beams 31 are embedded with screws 32 on the sides close to each other. A dual-axis motor 33 is installed in the middle of the crossbeam 1. The two output shaft ends of the dual-axis motor 33 are respectively fixedly connected to the adjacent ends of the screw 32. The ends of the two I-beams 31 away from each other are welded and fixed with mounting frames 34.

[0028] like Figure 3 and Figure 4As shown, the connecting assembly includes a sliding seat 41, a vertical plate 42, a horizontal plate 43, a U-shaped limit plate 45 and a return spring a46. The sliding seat 41 is slidably provided on the two mounting frames 34. The vertical plates 42 are slidably provided on the two sliding seats 41 in a front-to-back symmetrical manner. A horizontal plate 43 is welded and fixed between the tops of the two adjacent vertical plates 42. The two longitudinal beams 44 are respectively fixedly connected between the bottoms of the two adjacent vertical plates 42. The top panels of the two mounting frames 34 are slidably provided with U-shaped limit plates 45 for limiting and fixing the sliding seat 41. Two return springs a46 are connected at intervals between the two U-shaped limit plates 45 and the adjacent mounting frames 34.

[0029] like Figure 1 、 Figure 3 and Figure 4 As shown, the detection assembly includes a pressure sensor 51, a hydraulic cylinder 52, a top plate 53 and a control module 54. The pressure sensor 51 is embedded in the middle of the bottom of each of the two horizontal plates 43. The hydraulic cylinders 52 are symmetrically installed on the two sliding seats 41. The top plate 53 is fixedly connected between the ends of the piston rods of two adjacent hydraulic cylinders 52. The top plate 53 contacts the adjacent pressure sensors 51. The control module 54 is installed in the middle of the top of the crossbeam 1. The hydraulic cylinders 52 and the pressure sensors 51 are electrically connected to the control module 54.

[0030] like Figure 5 and Figure 6 As shown, the lifting assembly includes a mounting seat 61, a trapezoidal limit block 62, a pull plate 63, a reset spring b631, a card plate 64, a steel cable 65 and a hook 66. Six mounting seats 61 are arranged at intervals at the bottom of the two longitudinal beams 44. Trapezoidal limit blocks 62 are slidably arranged on the front and rear panels of the mounting seat 61. The sides of the trapezoidal limit blocks 62 that are close to each other are cut with inclined surfaces. The sides of the two adjacent trapezoidal limit blocks 62 that are away from each other are welded and fixed with a pull plate 63. Two reset springs are connected between the left and right sides of the pull plate 63 and the mounting seat 61. Spring b631, a card plate 64 is slidably provided in the mounting seat 61, the bottom of the card plate 64 is fixedly connected to a steel cable 65, the lower end of the steel cable 65 is fixedly connected to a hook 66, and the card plate 64 is symmetrically provided with a card slot that cooperates with the trapezoidal limit block 62. The trapezoidal limit block 62 can be inserted into the card slot, thereby limiting and fixing the card plate 64 in the mounting seat 61. When the card plate 64 is inserted into the mounting seat 61, it first contacts the inclined surface cut on the trapezoidal limit block 62, thereby pushing the two adjacent trapezoidal limit blocks 62 to move away from each other.

[0031] During transportation, the staff presses down the two U-shaped limit plates 45 to remove the two sliding seats 41 from the mounting frame 34, thereby separating the longitudinal beams 44 from the crossbeam 1, reducing the transportation space occupied and improving transportation convenience. After arriving at the lifting site, the sliding seats 41 are slid onto the mounting frame 34 and the U-shaped limit plates 45 are used to limit the sliding seats 41. When in use, the staff connects the crane hook 66 to the lifting ring 22, then lifts the crossbeam 1 and longitudinal beam 44, and visually moves the two longitudinal beams 44 to a position centered at the top of the steel grid. Next, the staff takes a plurality of hooks 66 and sets them at the bottom of the longitudinal beams 44 according to the grid distribution of the steel grid, achieving multi-point lifting of the steel grid, making the steel grid evenly stressed and reducing deformation. When setting the hooks 66, the staff inserts the clamping plate 64 into the mounting seat 61. During insertion, the card plate 64 first contacts and presses against the inclined surfaces of the two trapezoidal stoppers 62, pushing them away from each other. This causes the return spring b631 to stretch. When the slots on the card plate 64 align with the trapezoidal stoppers 62, the return spring b631 retracts, allowing the two trapezoidal stoppers 62 to insert into the slots on the card plate 64, securing the card plate 64 to the mounting base 61 and facilitating installation of the hook 66. After installing the hook 66, the operator operates the crane to hoist the entire lifting device upward. Because the position of the longitudinal beam 44 is adjusted visually, and the connection between the hook 66 and the steel grid doesn't allow the steel cable 65 to be completely vertical, the tilt heights of the steel cables 65 on both sides differ. During installation, the offset center of gravity of the steel grid may cause greater force on one longitudinal beam 44. At this point, the two pressure sensors 51 can detect the lifting force of each longitudinal beam 44. When the left pressure sensor 51 detects a greater force on the left longitudinal beam 44, the steel grid's center of gravity shifts to the left, resulting in a left-lower-right-higher position. The control module 54 then controls the piston rods of the two left hydraulic cylinders 52 to extend, driving the left longitudinal beam 44 upward via the top plate 53, cross plate 43, and vertical plate 42 until the pressures detected by the two pressure sensors 51 are equal. This means the steel grid is now horizontal, eliminating the need for detailed calculations before hoisting. Simple visual inspection is sufficient, saving time and effort.

[0032] like Figure 6 As shown, it also includes an extension beam 71, a connecting plate 72 and a strong bolt 73. The extension beams 71 are provided on the front and rear sides of the two longitudinal beams 44. The side of the extension beam 71 close to the adjacent longitudinal beam 44 is symmetrically welded and fixed with a connecting plate 72. Four strong bolts 73 are arranged at intervals between the two adjacent connecting plates 72, and the strong bolts 73 are used to achieve a fixed connection between the connecting plate 72 and the longitudinal beam 44. Three lifting components are also arranged at intervals at the bottom of the extension beam 71.

[0033] Before hoisting, the staff can install extension beams 71 on the front and rear sides of the longitudinal beam 44 through strong bolts 73 to extend the length of the longitudinal beam 44. The extension beams 71 can be removed during transportation for easy transportation.

[0034] like Figure 7 As shown, it also includes a short shaft 81, a U-shaped limiting rod 82 and a torsion spring 83. Each hook 66 is symmetrically welded and fixed with a short shaft 81 in the front and back directions. A U-shaped limiting rod 82 is rotatably connected between two adjacent short shafts 81, and a torsion spring 83 is connected between the U-shaped limiting rod 82 and the adjacent short shafts 81.

[0035] When connecting the hook 66 to the steel grid, the staff first pushes away the U-shaped limit rod 82 and clamps the hook 66 on the steel pipe of the steel grid. After loosening the U-shaped limit rod 82, the U-shaped limit rod 82 is reset under the reset action of the torsion spring 83, and the opening of the hook 66 is closed to prevent the hook 66 from loosening.

[0036] like Figure 6 As shown, it also includes a U-shaped mounting plate 91 and a running wheel 92. The bottom of the two longitudinal beams 44 are both welded with two U-shaped mounting plates 91 at intervals in the front and back, and the bottom of the two U-shaped mounting plates 91 are both symmetrically fixed with running wheels 92 by bolts.

[0037] The U-shaped mounting plate 91 and the running wheels 92 are provided to facilitate transportation of the longitudinal beam 44 .

[0038] like Figure 8 As shown, it also includes a fixed plate 101, a heightening frame 102, a U-shaped insertion rod 103 and a magnetic block 104. Two fixed plates 101 are symmetrically welded and fixed on the outer walls on both sides of the front and rear sides of the beam 1. The four adjacent fixed plates 101 are all slidably provided with a heightening frame 102. The two heightening frames 102 are both slidably inserted with a U-shaped insertion rod 103. The U-shaped insertion rod 103 can also penetrate the adjacent fixed plates 101. The lower part of the two heightening frames 102 is provided with a U-shaped insertion rod passing through. The U-shaped rod 103 is fixed to the fixing plate 101 through the insertion hole. Initially, the U-shaped rod fixes the raising frame 102 on the fixing plate 101 through the insertion hole, so that the raising frame 102 is folded up, reducing the space occupied by the raising frame 102 and the beam 1 in the vertical direction, which is convenient for transporting the beam 1. Two magnetic blocks 104 are fixedly connected to the U-shaped rod 103. The U-shaped rod 103 is magnetically fixed to the adjacent fixing plate 101 through the magnetic block 104, thereby preventing the U-shaped rod 103 from loosening during transportation.

[0039] When installing the sliding seat 41, the staff first pulls out the U-shaped rod 103, moves the raising frame 102 to the lower side of the fixed plate 101, and then reinserts the U-shaped rod 103 from the said hole opened on the lower side of the raising frame 102, and fixes the raising frame 102 to the position on the lower side of the fixed plate 101, thereby lifting the beam 1 and making the installation frame 34 located at the height position for assembly with the sliding seat 41, which is convenient for the staff to install the sliding seat 41.

[0040] The traveling wheels 92 are universal wheels, which facilitate the staff to adjust the moving angle of the longitudinal beam 44 during transportation.

[0041] Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art from this disclosure that various changes or modifications may be made to the present invention without departing from the principles and spirit of the invention as defined in the claims. Therefore, the detailed description of the disclosed embodiments is intended to be illustrative only and not to limit the present invention, which is to be defined by the claims.

Claims

1. A steel grid hoisting device with good stability, characterized in that: Includes: A crossbeam (1), wherein the top of the crossbeam (1) is symmetrically fixedly connected to a connecting seat (2), two connecting seats (2) are connected to steel cables (21), and a lifting ring (22) is fixedly connected between the upper ends of the two steel cables (21). Adjustment components are symmetrically arranged on the crossbeam (1), and the adjustment components are each provided with a connecting component. Both connecting components are provided with a longitudinal beam (44), and the connecting component is used to realize a quick-release connection between the longitudinal beam (44) and the adjustment component. The adjustment component is used to adjust the spacing between the two connecting components to adjust the spacing between the two longitudinal beams (44). The connecting component is also provided with a detection component for detecting the lifting load of the longitudinal beam (44), and a plurality of lifting components for lifting a steel grid are arranged at intervals at the bottom of the longitudinal beam (44).

2. A steel grid hoisting device with good stability according to claim 1, characterized in that: The adjustment components include: I-beams (31), the I-beams (31) are symmetrically slidably arranged inside the crossbeam (1), the two I-beams (31) are embedded with screw rods (32) on the sides close to each other, and the ends of the two I-beams (31) away from each other are fixedly connected to the mounting frames (34); A dual-axis motor (33) is installed in the middle of the crossbeam (1), and two output shaft ends of the dual-axis motor (33) are respectively fixedly connected to adjacent ends of the screw rod (32).

3. A steel grid hoisting device with good stability according to claim 2, characterized in that: Connectivity components include: A sliding seat (41), the two mounting frames (34) are both slidably provided with the sliding seat (41), the two sliding seats (41) are both slidably provided with vertical plates (42) in a front-to-back symmetrical manner, a horizontal plate (43) is fixedly connected between the tops of the two adjacent vertical plates (42), and the two longitudinal beams (44) are respectively fixedly connected between the bottoms of the two adjacent vertical plates (42); A U-shaped limiting plate (45) is slidably provided on the top panels of the two installation frames (34), and two return springs a (46) are spacedly connected between the two U-shaped limiting plates (45) and the adjacent installation frames (34).

4. A steel grid hoisting device with good stability according to claim 3, characterized in that: The detection components include: A pressure sensor (51), wherein the pressure sensor (51) is embedded in the middle of the bottom of each of the two horizontal plates (43); A hydraulic cylinder (52), wherein the two sliding seats (41) are both symmetrically mounted with the hydraulic cylinder (52), and a top plate (53) is fixedly connected between the piston rod ends of the two adjacent hydraulic cylinders (52), and the top plate (53) is in contact with the adjacent pressure sensor (51); A control module (54) is installed in the middle of the top of the crossbeam (1).

5. A steel grid hoisting device with good stability according to claim 4, characterized in that: The lifting kit includes: A mounting seat (61) is provided with a plurality of mounting seats (61) at intervals at the bottom of the two longitudinal beams (44); a trapezoidal limit block (62) is slidably provided on the front and rear panels of the mounting seat (61); a pull plate (63) is fixedly connected to the side away from each other of two adjacent trapezoidal limit blocks (62); two return springs b (631) are connected between the pull plate (63) and the mounting seat (61); a card plate (64) is slidably provided in the mounting seat (61); a steel cable (65) is fixedly connected to the bottom of the card plate (64); and a hook (66) is fixedly connected to the lower end of the steel cable (65).

6. A steel grid hoisting device with good stability according to claim 5, characterized in that: Also includes: An extension beam (71) is provided on both the front and rear sides of the two longitudinal beams (44), and a connecting plate (72) is fixedly connected symmetrically to the side of the extension beam (71) close to the adjacent longitudinal beam (44). Four strong bolts (73) are provided at intervals between the two adjacent connecting plates (72), and the strong bolts (73) are used to achieve fixed connection between the connecting plate (72) and the longitudinal beam (44).

7. A steel grid hoisting device with good stability according to claim 6, characterized in that: Also includes: A short shaft (81) is fixedly connected to each hook (66) in a front-to-back symmetrical manner, a U-shaped limiting rod (82) is rotatably connected between two adjacent short shafts (81), and a torsion spring (83) is connected between the U-shaped limiting rod (82) and the adjacent short shafts (81).

8. A steel grid hoisting device with good stability according to claim 7, characterized in that: Also includes: The bottoms of the two longitudinal beams (44) are fixedly connected to the two U-shaped mounting plates (91) in a front-to-rear interval manner, and the bottoms of the two U-shaped mounting plates (91) are fixedly connected to the walking wheels (92) in a left-right symmetrical manner.

9. A steel grid hoisting device with good stability according to claim 8, characterized in that: Also includes: A fixed plate (101), two fixed plates (101) are symmetrically fixedly connected to the outer walls on both sides of the front and rear sides of the beam (1), four adjacent fixed plates (101) are slidably provided with a heightening frame (102), and a U-shaped insertion rod (103) is slidably inserted on each of the two heightening frames (102), and the U-shaped insertion rod (103) can also pass through the adjacent fixed plates (101), and two magnetic blocks (104) are fixedly connected to the U-shaped insertion rod (103).

10. A steel grid hoisting device with good stability according to claim 9, characterized in that: The traveling wheel (92) is a universal wheel.

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