Safe lifting device for steel structure engineering construction

Abstract

The invention belongs to the technical field of hoisting devices, and particularly relates to a safe hoisting device for steel structure engineering construction. Comprising a supporting hanging plate, symmetrical first connecting seats are hinged to the supporting hanging plate, first telescopic rods are fixedly connected to the first connecting seats, second connecting seats are fixedly connected to the telescopic ends of the first telescopic rods, fixed rods are hinged to the second connecting seats, hanging hooks are hinged to the fixed rods, symmetrical connecting ropes are fixedly connected to a sliding frame, and the sliding frame is fixedly connected with a sliding rod. The symmetrical connecting ropes are jointly and fixedly connected with a square plate, the square plate is slidably connected with four L-shaped connecting plates, and the L-shaped connecting plates located on the same side of the I-shaped steel are jointly and fixedly connected with a supporting plate. The lifting hooks are matched with the lifting lugs, meanwhile, the supporting plates are used for providing part of upward supporting force for the I-shaped steel, the pulling force borne by the welding positions between the lifting lugs and the I-shaped steel is reduced, and the safety of the I-shaped steel in the lifting process is further improved.

Description

Technical Field

[0001] The invention complies with the technical field of lifting devices, and in particular points out a safe lifting device used for steel structure engineering construction. Background Art

[0002] Steel structure construction refers to the construction process that uses I-beams as the main material in the frame and supporting structure of construction projects. It is widely used in modern buildings, bridges, industrial plants and other fields due to its high strength, light weight, fast construction speed and good seismic performance.

[0003] During the construction process, it is necessary to build a supporting structure in the steel structure. When the I-beam used to build the supporting structure leaves the factory, a lifting lug is welded on the upper side of the I-beam, and auxiliary hanging plates are welded on the upper side surfaces at both ends of the I-beam. The auxiliary hanging plates are used in conjunction with the brackets on the columns to adjust the height of the I-beam between the two columns. The existing lifting device can only lift the I-beam by hooking the lifting lug of the I-beam. During the lifting process of the I-beam, if the welding joint between the lifting lug and the I-beam becomes loose, due to the simple lifting method of the existing device, the I-beam in mid-air cannot be protected in the first time, resulting in the I-beam falling downward in mid-air, thereby causing a serious construction accident. Summary of the invention

[0004] In order to overcome the shortcoming of the simple fixed structure of the existing lifting device, the present invention provides a safe lifting device for use in steel structure engineering construction.

[0005] The technical solution of the present invention is: a safe lifting device for steel structure engineering construction, including a supporting hanging plate, the supporting hanging plate is hinged with a symmetrical first connecting seat, the first connecting seat is fixedly connected with a first telescopic rod, the first telescopic rod is filled with hydraulic oil, the telescopic end of the first telescopic rod is fixedly connected with a second connecting seat, a symmetrical first elastic member is fixedly connected between the first telescopic rod and the adjacent second connecting seat, the end of the second connecting seat away from the first connecting seat is hinged with a fixed rod through a rotating shaft, the fixed rod is slidably connected with a sliding frame, the fixed rod is fixedly connected with a first fixed plate, the first fixed plate and the adjacent A second elastic member is fixed between the sliding frames, a hook is hinged on one end of the fixing rod away from the second connecting seat, symmetrical connecting ropes are fixed to the sliding frames, and the symmetrical connecting ropes are commonly fixed to a square plate, and the square plate is slidably connected to four L connecting plates through a mounting seat, and the L connecting plates located on the same side of the I-beam are commonly fixed to a support plate, and the support plate is used to support the I-beam, and second telescopic rods are respectively fixed to the four mounting seats of the square plate, and the telescopic ends of the second telescopic rods are fixed to the adjacent L connecting plates, and oil guide pipes are connected between the first telescopic rod and the four adjacent second telescopic rods.

[0006] Furthermore, the supporting hanging plate, the first connecting seat and the hook are located on the same straight line, so as to keep the first telescopic rod in a vertically extended state.

[0007] Furthermore, a through hole is provided in the middle of the square plate, and the through hole of the square plate is used to cooperate with the lifting ear of the I-beam to limit the position of the square plate.

[0008] Furthermore, the sum of the elastic forces of adjacent first elastic members is greater than the gravity of all parts on the first telescopic rod, so as to ensure that the telescopic end of the first telescopic rod is in a contracted state.

[0009] Furthermore, it also includes a clamping support mechanism, which is arranged on both sides of the square plate, and the clamping support mechanism is used to apply shear force to the I-beam, and the clamping support mechanism includes a symmetrical third telescopic rod, and the symmetrical third telescopic rods are fixed to the first fixed plate through a mounting plate, and the third telescopic rods are filled with hydraulic oil, and the telescopic ends of the third telescopic rods pass through the adjacent sliding frames, and the top and middle parts of the telescopic parts of the third telescopic rods are fixedly connected to the limiting plates, and the limiting plates on the telescopic parts of the third telescopic rods cooperate with the adjacent sliding frames to limit the positions. The support plate is fixedly connected to a support seat, and the support seat is rotatably connected to a rotating plate through a rotating shaft. The rotating plate on the support seat is fixedly connected to a symmetrical fixed column, the middle part of the fixed column is a hard steel column, and a layer of friction rubber is wrapped on the outer side of the fixed column. The rotating shaft of the rotating plate on the support seat is fixedly connected to a rotating plate, and the rotating plate is provided with a through groove. The support plate is fixedly connected to a fourth telescopic rod through a mounting seat, and the telescopic end of the fourth telescopic rod is slidably matched with the same side of the adjacent rotating plate through a connecting shaft, and the symmetrical fourth telescopic rods are respectively connected to the symmetrical third telescopic rods with oil guide pipes.

[0010] The cam is provided with a plurality of guide rails, each of which is provided with a plurality of guide rails, and the guide rails are provided with a plurality of guide rails at a plurality of opposite ends of the guide rails, and the guide rails are provided with a plurality of guide rails at a plurality of opposite ends of the guide rails.

[0011] Furthermore, the sliding rods on both sides of the I-beam are at different heights, which are used to ensure that the limit hooks on both sides of the I-beam are in contact with the vertical parts of the I-beam at the same time.

[0012] Furthermore, the width of the notch of the limiting hook is greater than the thickness of the vertical portion of the I-beam, so as to ensure that the limiting hook and the vertical portion of the I-beam are limited.

[0013] Furthermore, the limiting assembly includes a second fixing plate, the second fixing plate is fixedly connected to the adjacent supporting plate, the end of the sliding rod away from the limiting hook is fixedly connected to the mounting plate, the second fixing plate is limitedly matched with the adjacent limiting hook, a third elastic member is fixedly connected between the second fixing plate and the mounting plate on the adjacent sliding rod, the second fixing plate is slidably connected to the first limiting column, the end of the first limiting column away from the sliding rod is fixedly connected to the mounting plate, a fourth elastic member is fixedly connected between the mounting plate of the first limiting column and the second fixing plate, the sliding rod is provided with a blind hole, the first limiting column is limitedly matched with the blind hole of the adjacent sliding rod, and the middle part of the first limiting column is fixedly connected to the mounting plate The mounting plate in the middle of the first limiting column is limitedly matched with the adjacent second fixing plate, the mounting plate at the end of the first limiting column is fixedly connected to the limiting frame, the support plate is fixedly connected to the third fixing plate, the limiting frame and the third fixing plate are both provided with through holes, the through holes of the limiting frame and the through holes of the adjacent third fixing plate are jointly provided with a second limiting column, the second limiting column is limitedly matched with the adjacent limiting frame and the third fixing plate, the end of the second limiting column away from the limiting frame is fixedly connected to the mounting plate, the side of the rotating plate close to the adjacent second limiting column is fixedly connected to the limiting connecting plate, the limiting connecting plate is provided with a through hole, and the second limiting column is located in the through hole of the adjacent limiting connecting plate.

[0014] Furthermore, the diameter of the through hole of the limiting connecting plate is larger than the diameter of the second limiting column, and the diameter of the through hole of the limiting connecting plate is smaller than the diameter of the end mounting plate of the second limiting column. The limiting connecting plate and the end mounting plate of the second limiting column are limitedly cooperated to drive the second limiting column to be taken out from the through holes of the adjacent limiting frame and the third fixed plate.

[0015] The beneficial effects are as follows: 1. The present invention cooperates with the lifting hook and the lifting ear, and uses the support plate to provide partial upward supporting force for the I-beam, thereby reducing the tension on the welding point between the lifting ear and the I-beam, and further improving the safety of the I-beam during the lifting process; using two support plates to support the I-beam avoids the risk of the I-beam falling due to the loose welding point between the lifting ear and the I-beam, and reduces the probability of construction accidents.

[0016] 2. The present invention utilizes two adjacent fixed columns to extrude the I-beam, and the two adjacent fixed columns apply shear force to the I-beam, thereby improving the fixing strength of the I-beam and preventing the I-beam from sliding sideways on the support plate after the connection between the lifting ear and the I-beam breaks, causing the I-beam to lose balance in the air.

[0017] 3. The present invention utilizes a limit hook to apply a supporting force to the outer end of the I-beam to prevent the I-beam from slipping and causing a construction accident. In addition, during normal lifting, the limit hook will not pop out to block the connection between the I-beam and the bracket on the column. It will only pop out when the welding point between the lifting ear and the I-beam is broken, which further improves the practicality of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0019] Figure 2 It is a three-dimensional structural schematic diagram of the first telescopic rod and the second connecting seat and other parts of the present invention;

[0020] Figure 3 It is a side view stereoscopic structural diagram of the sliding frame and the first fixed plate and other parts of the present invention;

[0021] Figure 4 It is a top view of the three-dimensional structure of the square plate and the support plate and other parts of the present invention;

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the first fixing plate and the third telescopic rod and other parts of the present invention;

[0023] Figure 6 It is a three-dimensional structural schematic diagram of the fixing column and the fourth telescopic rod and other parts of the present invention;

[0024] Figure 7 It is a schematic diagram of the three-dimensional structure of the sliding rod, the second fixing plate and other parts of the present invention;

[0025] Figure 8 It is a three-dimensional structural schematic diagram of parts such as the limit hook and the second fixing plate of the present invention;

[0026] Fig. 9 It is a schematic diagram of a cross-sectional three-dimensional structure of the sliding rod of the present invention;

[0027] Fig.10 It is a schematic diagram of the three-dimensional structure of parts such as the second limiting column and the limiting connecting plate of the present invention.

[0028] Parts names and serial numbers in the figure: 1-support hanging plate, 2-first connecting seat, 3-first telescopic rod, 4-second connecting seat, 401-first elastic member, 5-fixed rod, 6-sliding frame, 7-first fixed plate, 8-second elastic member, 9-hook, 10-connecting rope, 11-square plate, 12-L connecting plate, 13-support plate, 14-second telescopic rod, 15-third telescopic rod, 16-support seat, 17-fixed column, 18-rotating plate, 19-fourth telescopic rod, 20-sliding rod, 21-connecting frame, 22-one-way rotating wheel, 23-limiting hook, 24-second fixed plate, 241-third elastic member, 25-first limiting column, 26-fourth elastic member, 27-limiting frame, 28-third fixed plate, 29-second limiting column, 30-limiting connecting plate. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 without creative work are within the scope of protection of the present invention.

[0030] After research, it was found that in order to facilitate the lifting of I-beams, the lifting lugs need to be welded before the I-beams leave the factory, but the lifting lugs are not integrated, and during the transportation of the I-beams, it is not certain whether the lifting lugs are hit by external forces, and the connection strength between the lifting lugs and the I-beams is visually inspected by the staff, and it is difficult to find the connection strength between the lifting lugs and the I-beams. At the same time, the existing lifting device only hangs the lifting lugs through the hooks, and when the welding connection between the lifting lugs and the I-beams fails, the I-beams will fall and cause construction accidents. The following implementation method is used to solve the above problems.

[0031] Embodiment 1: A safe lifting device for steel structure construction, such as Figure 1-Figure 4As shown, it includes a supporting hanging plate 1, which is hinged with two symmetrical first connecting seats 2, and a first telescopic rod 3 is fixedly connected to the lower side of the first connecting seat 2. The first telescopic rod 3 is an existing ordinary hydraulic telescopic rod, and its internal structure is not shown in the accompanying drawings. Hydraulic oil is filled in the first telescopic rod 3, and the telescopic end of the first telescopic rod 3 is fixedly connected to the second connecting seat 4. A symmetrical first elastic member 401 is fixedly connected between the first telescopic rod 3 and the adjacent second connecting seat 4. The first elastic member 401 is configured as a tension spring, and the sum of the elastic forces of adjacent first elastic members 401 is greater than the gravity of all parts on the first telescopic rod 3, which is used to ensure that the first telescopic rod 3 The telescopic end of the rod 3 is in a retracted state. Initially, the telescopic end of the first telescopic rod 3 is in a retracted state. The lower end of the second connecting seat 4 is hinged with a fixed rod 5 through a rotating shaft. The fixed rod 5 is slidably connected to a sliding frame 6. The fixed rod 5 is fixedly connected to a first fixed plate 7. The first fixed plate 7 is located below the adjacent sliding frame 6. A second elastic member 8 is fixedly connected between the first fixed plate 7 and the adjacent sliding frame 6. The second elastic member 8 is set as a spring. The second elastic member 8 is sleeved on the adjacent fixed rod 5. The lower end of the fixed rod 5 is hinged with a hook 9. The hook 9 is used to hook the lifting ear on the I-beam. The sliding frame 6 is fixedly connected with two symmetrical connecting ropes 10. The two The connecting rope 10 is fixedly connected with a square plate 11. When the hook 9 hooks the lifting ear, the square plate 11 fits on the upper side of the I-beam. A through hole is provided in the middle of the square plate 11. The through hole of the square plate 11 is used to cooperate with the lifting ear of the I-beam to position the square plate 11. The square plate 11 is slidably connected with four L-connecting plates 12 through a mounting seat. The two L-connecting plates 12 located on the same side of the I-beam are fixedly connected with a support plate 13. The front and rear adjacent support plates 13 are used to support the I-beam and provide partial support force for the I-beam, thereby reducing the tension between the hook 9 and the lifting ear. The four mountings of the square plate 11 A second telescopic rod 14 is fixedly connected to the seats respectively. The second telescopic rod 14 is an existing ordinary hydraulic telescopic rod, and its internal structure is not shown in the accompanying drawings. The telescopic end of the second telescopic rod 14 is fixedly connected to the adjacent L-connecting plate 12. The telescopic end of the second telescopic rod 14 is used to change the position of the support plate 13 on the same side. An oil guide pipe is connected between the first telescopic rod 3 and the four adjacent second telescopic rods 14. When the telescopic end of the first telescopic rod 3 is extended, the telescopic ends of the four second telescopic rods 14 retract inwardly. The supporting hanging plate 1, the first connecting seat 2 and the hook 9 are located on the same straight line, which is used to keep the first telescopic rod 3 in a vertically extended state.

[0032] When the I-beam leaves the factory, two lifting ears and two auxiliary hanging plates are welded on the upper side of the I-beam. The two auxiliary hanging plates are located at both ends of the I-beam (such as Figure 1As shown), during the installation process, the two auxiliary hanging plates cooperate with the corbels (transverse connection) on the steel column to correct the installation position of the I-beam. When lifting the I-beam, first lower the support hanging plate 1 so that the two square plates 11 gradually contact the upper side of the I-beam. Then, with the assistance of the staff, the lifting ears pass through the through holes in the middle of the adjacent support hanging plates 1. At the same time, the staff hangs the hooks 9 into the through holes of the adjacent lifting ears. When the hooks 9 on both sides cooperate with the adjacent lifting ears, the support hanging plate 1 is then raised. Next, the sling on the left side of the support hanging plate 1 is used as an example to describe in detail:

[0033] The support hanging plate 1 drives the first connecting seat 2 to move upward. Under the gravity of the I-beam, the gravity of the I-beam acts on the hook 9 and the fixing rod 5. As the support hanging plate 1 gradually moves upward, the telescopic end of the first telescopic rod 3 extends outward, and at the same time, the two first elastic members 401 are stretched. At this time, the square plate 11 is in contact with the upper side of the I-beam. During the process of the telescopic end of the first telescopic rod 3 extending outward, the hydraulic oil in the first telescopic rod 3 flows into the four second telescopic rods 14 along the four oil guide pipes. The telescopic ends of the four second telescopic rods 14 shrink at the same time, and the second telescopic rods 14 drive The adjacent L-connecting plates 12 slide along the adjacent mounting seats on the square plate 11, and the four L-connecting plates 12 all move toward the I-beam, and the two support plates 13 on the front and rear sides also move toward the I-beam. When the telescopic end of the first telescopic rod 3 is fully extended, the two support plates 13 move to the lower side of the horizontal position on the upper side of the I-beam, and the support hanging plate 1 continues to move upward. The pulling force of the first telescopic rod 3 directly acts on the fixed rod 5 through the second connecting seat 4, and the fixed rod 5 drives the hook 9 to move upward. The hook 9 directly applies the pulling force to the lifting ear of the I-beam. At this time, the I-beam slowly leaves the ground.

[0034] When the first fixing plate 7 moves upward, the telescopic end of the first telescopic rod 3 extends outward, and the two support plates 13 move to the lower side of the horizontal position on the upper side of the I-beam. When the first fixing plate 7 moves upward, the first fixing plate 7 presses the second elastic member 8 upward under the limiting action of the two adjacent support plates 13 and the I-beam, and the elastic force of the second elastic member 8 acts on the lower side of the sliding frame 6, and the two connecting ropes 10 are gradually straightened. At this time, the second elastic member 8 will not be completely compressed. After the two connecting ropes 10 are straightened, the two support plates 13 are also squeezed on the I-beam, providing partial upward supporting force for the I-beam, and the support plate 13 is used to provide partial upward supporting force for the I-beam through the cooperation of the lifting hook 9 and the lifting ear. The tension at the welding point between the lifting ear and the I-beam is reduced, and the safety of the I-beam during lifting is further improved.

[0035] When the weld between the lifting ear and the I-beam breaks during the lifting of the I-beam, the lifting ear is separated from the I-beam. At this time, the hook 9 loses the pulling force on the I-beam. Under the gravity of the I-beam, the I-beam pulls the square plate 11 downward through the two support plates 13. The square plate 11 pulls the sliding frame 6 downward through the two connecting ropes 10. The sliding frame 6 slides downward along the fixed rod 5 until the second elastic member 8 is completely compressed. During the compression of the second elastic member 8, part of the impact force of the I-beam fall is buffered to prevent the impact force generated by the falling of the I-beam from causing the connecting rope 10 to break. The I-beam is supported by the two support plates 13, which avoids the risk of the I-beam falling due to the loose welding between the lifting ear and the I-beam, reduces the probability of construction accidents, and when the lifting ear loses contact with the I-beam, it is necessary to transfer the I-beam to the ground in time.

[0036] After the I-beam is hoisted to the designated position, the auxiliary hanging plates on the left and right sides of the I-beam are in contact with the upper side surfaces of the adjacent column brackets respectively. Then the staff begins to install the I-beam on the column brackets with bolts and mounting parts, and welds the I-beam and the brackets. After the welding is completed, the support hanging plate 1 continues to move downward. Under the pulling force of the two first elastic members 401, the first connecting seat 2 gradually moves downward, and then the telescopic end of the first telescopic rod 3 begins to shrink. In the process of the support hanging plate 1 moving downward, under the elastic force of the second elastic member 8, the sliding frame 6 slides upward along the fixed rod 5 to reset, and at the same time, the connecting rope 10 loses its tension, the support plate 13 loses its squeezing of the I-beam, the telescopic ends of the four second telescopic rods 14 begin to extend, and drive the adjacent L connecting plates 12 to move synchronously, the support plates 13 on the front and rear sides move away from each other, and gradually lose contact with the I-beam, then the staff releases the cooperation between the hook 9 and the adjacent lifting ears, and then continues to move the support hanging plate 1 upward, so that the square plate 11 completely loses contact with the upper side of the I-beam.

[0037] Embodiment 2: Based on embodiment 1, Figure 5 and Figure 6As shown, it also includes a clamping support mechanism, which is arranged on both sides of the square plate 11, and the clamping support mechanism is used to apply shear force to the I-beam. The clamping support mechanism includes two symmetrical third telescopic rods 15, and the third telescopic rod 15 is an existing ordinary hydraulic telescopic rod, and its internal structure is not shown in the accompanying drawings. The two third telescopic rods 15 are fixedly connected to the first fixed plate 7 through a mounting plate, and the third telescopic rod 15 is filled with hydraulic oil. The telescopic end of the third telescopic rod 15 passes through the adjacent sliding frame 6, and the top and middle of the telescopic part of the third telescopic rod 15 are fixedly connected to the limiting plate. Initially, the sliding frame 6 contacts the limiting plate at the top of the telescopic part of the third telescopic rod 15, and the limiting plate on the telescopic part of the third telescopic rod 15 is limitedly matched with the adjacent sliding frame 6. When the sliding frame 6 squeezes the limiting plate in the middle of the telescopic part of the third telescopic rod 15 downward, the telescopic part of the third telescopic rod 15 will shrink inward, and the support plate 13 is fixedly connected to a support seat 16, which supports The seat 16 is connected to a rotating plate by a rotating shaft, and the rotating plate on the support seat 16 is fixedly connected to two symmetrical fixed columns 17. Driven by the rotating plate, the two fixed columns 17 rotate and squeeze on the I-beam to apply shear fixing force to the I-beam. The middle part of the fixed column 17 is a hard steel column, and a layer of friction rubber is wrapped on the outer side of the fixed column 17 to ensure the rigidity of the fixed column 17 while increasing the friction between the I-beam and the I-beam. The rotating shaft of the rotating plate on the support seat 16 is fixedly connected to a rotating plate 18, and the rotating plate 18 is used to drive the connected rotating plate to rotate. The rotating plate 18 is provided with a through groove. The support plate 13 is fixedly connected to a fourth telescopic rod 19 through a mounting seat. The fourth telescopic rod 19 is an existing ordinary hydraulic telescopic rod, and its internal structure is not shown in the accompanying drawings. The telescopic end of the fourth telescopic rod 19 slides with the same side of the adjacent rotating plate 18 through a connecting shaft, and the two fourth telescopic rods 19 are respectively connected to the two third telescopic rods 15 with oil guide pipes.

[0038] In the process of the front and rear support plates 13 moving closer to each other, the support plate 13 drives the support seat 16 fixed thereon to move synchronously, and then the two adjacent fixed columns 17 are respectively located on the upper and lower sides of the horizontal position on the upper side of the I-beam. After the I-beam is lifted, the second elastic member 8 is compressed, and the distance between the sliding frame 6 and the first fixed plate 7 is reduced. The sliding frame 6 slides downward along the telescopic end of the third telescopic rod 15, and the sliding frame 6 does not contact the limit plate in the middle of the telescopic part of the third telescopic rod 15. At this time, the telescopic end of the third telescopic rod 15 does not shrink. When the connection between the lifting ear and the I-beam breaks, the sliding frame 6 squeezes the limit plate in the middle of the third telescopic rod 15, and the distance between the sliding frame 6 and the first fixed plate 7 is reduced again. The telescopic end of the third telescopic rod 15 gradually retracts. At this time, the hydraulic oil in the third telescopic rod 15 flows into the connected fourth telescopic rod through the oil guide pipe. 19, the hydraulic oil pressure in the fourth telescopic rod 19 gradually increases, and then the telescopic end of the fourth telescopic rod 19 extends out, and the telescopic end of the fourth telescopic rod 19 drives the adjacent rotating plate 18 to swing upward through the connecting shaft thereon, and the rotating plate 18 drives the rotating plate thereon to rotate synchronously along the adjacent supporting seat 16, and the connecting shaft on the telescopic end of the fourth telescopic rod 19 slides along the through groove on the adjacent rotating plate 18, and the rotating plate on the rotating plate 18 drives the two fixed columns 17 thereon to rotate. At this time, the two fixed columns 17 are respectively squeezed with the upper and lower sides of the upper horizontal part of the I-beam, and the I-beam is squeezed by the two adjacent fixed columns 17. The two adjacent fixed columns 17 apply shear force to the I-beam, thereby improving the fixing strength of the I-beam and preventing the I-beam from sliding sideways on the support plate 13 row after the breakage at the connection between the lifting ear and the I-beam, causing the I-beam to lose balance in the air.

[0039] After the two ends of the I-beam are respectively welded to the two brackets or the I-beam is placed back on the ground, the supporting hanging plate 1 is lowered, and the sliding frame 6 slides upward along the fixed rod 5 to reset under the elastic force of the second elastic member 8, and the sliding frame 6 contacts the limit plate at the top of the telescopic part of the adjacent third telescopic rod 15, and then drives the telescopic end of the adjacent third telescopic rod 15 to move upward and reset, and the hydraulic oil in the fourth telescopic rod 19 flows back to the connected third telescopic rod 15 along the oil guide pipe, and the fourth telescopic rod 19 moves downward and resets, and the telescopic end of the fourth telescopic rod 19 drives the adjacent rotating plate 18 to reset, and the two adjacent fixed columns 17 release the extrusion on the I-beam, and the two fixed columns 17 are reset along the adjacent supporting plate 13.

[0040] Embodiment 3: Based on embodiment 2, Figure 3 , Figure 7-Figure 9As shown, it also includes an anti-skid mechanism, which is arranged on both sides of the square plate 11. The anti-skid mechanism is used to prevent the I-beam from tilting and sliding sideways when it is lifted. The anti-skid mechanism includes two sliding rods 20. A guide groove is arranged on the upper side of the sliding rod 20. A fixed block is arranged at the bottom of the support plate 13. The sliding rod 20 is slidably connected to the fixed block at the bottom of the adjacent support plate 13 through the guide groove thereon. The sliding rod 20 is located below the adjacent support plate 13. The sliding rod 20 is limitedly matched with the fixed block on the adjacent support plate 13. When the sliding rod 20 slides along the fixed block on the adjacent support plate 13 for a specified length, the sliding rod 20 cannot continue to slide. The sliding rod 20 is fixedly connected to a connecting frame 21. The connecting frame 21 is equipped with a one-way rotating wheel 22. The one-way rotating wheel 22 is an existing device. The specific one-way structure inside it is not shown in the accompanying drawings. A torsion spring is fixedly connected between the one-way rotating wheel 22 and the adjacent connecting frame 21. The torsion spring is used to drive the adjacent one-way rotating wheel 22 to rotate in a single direction. The one-way rotating wheel 22 is fixedly connected to a limiting hook 23. The sliding rods 20 on both sides of the I-beam are at different heights, which are used to ensure that the limiting hooks 23 on both sides of the I-beam are in contact with the vertical part of the I-beam at the same time. The limiting hooks 23 are used to limit the side of the I-beam. The limiting hooks 23 are set to be n-shaped. The width of the notch of the limiting hooks 23 is greater than the thickness of the vertical part of the I-beam, which is used to ensure that the limiting hooks 23 are limited to the vertical part of the I-beam. A limiting component is set between the support plate 13 and the adjacent rotating plate 18. The limiting component is used to limit the adjacent sliding rods 20.

[0041] like Figure 8-Figure 10As shown, the limiting assembly includes a second fixing plate 24, the second fixing plate 24 is fixedly connected to the adjacent supporting plate 13, the end of the sliding rod 20 away from the limiting hook 23 is fixedly connected to the mounting plate, the second fixing plate 24 and the adjacent limiting hook 23 are limitedly matched, so that the torsion spring between the limiting hook 23 and the connecting frame 21 is in a force storage state, a third elastic member 241 is fixedly connected between the second fixing plate 24 and the mounting plate on the adjacent sliding rod 20, the third elastic member 241 is set as an elastic pull rope, the second fixing plate 24 is slidably connected to the first limiting column 25, the end of the first limiting column 25 away from the sliding rod 20 is fixedly connected to the mounting plate, and the first limiting A fourth elastic member 26 is fixedly connected between the mounting plate of the column 25 and the second fixed plate 24. The fourth elastic member 26 is set as a spring. The fourth elastic member 26 is sleeved on the outer side of the first limiting column 25. The sliding rod 20 is provided with a blind hole. The first limiting column 25 is limitedly matched with the blind hole of the adjacent sliding rod 20 to ensure that the third elastic member 241 is in a stretched state at the beginning. A mounting plate is fixedly connected to the middle part of the first limiting column 25. The mounting plate in the middle part of the first limiting column 25 is limitedly matched with the adjacent second fixed plate 24 to prevent the first limiting column 25 from falling off from the second fixed plate 24. The mounting plate at the end of the first limiting column 25 is fixedly connected with The limiting frame 27 and the support plate 13 are fixedly connected with a third fixing plate 28. The limiting frame 27 and the third fixing plate 28 are both provided with through holes. The through holes of the limiting frame 27 and the through holes of the adjacent third fixing plate 28 are jointly provided with a second limiting column 29. Initially, the fourth elastic member 26 is in a compressed and force-storing state. The second limiting column 29 is limitedly matched with the adjacent limiting frame 27 and the third fixing plate 28. The upper end of the second limiting column 29 is fixedly connected with a mounting plate. The side of the rotating plate 18 close to the adjacent second limiting column 29 is fixedly connected with a limiting connecting plate 30. The limiting connecting plate 30 is provided with a through hole. The second limiting column 29 is located at the adjacent limiting connecting plate In the through hole of the plate 30, the through hole diameter of the limiting connecting plate 30 is larger than the diameter of the adjacent second limiting column 29, which prevents the adjacent second limiting column 29 from deflecting when the connecting plate 30 swings upward, and the through hole diameter of the limiting connecting plate 30 is smaller than the diameter of the mounting plate at the end of the adjacent second limiting column 29. After the connecting plate 30 lifts the mounting plate at the upper end of the adjacent second limiting column 29, the second limiting column 29 moves upward and releases the limitation on the adjacent limiting frame 27. The limiting connecting plate 30 cooperates with the mounting plate at the end of the second limiting column 29 to drive the second limiting column 29 to be removed from the through hole of the adjacent limiting frame 27 and the third fixed plate 28.

[0042] When the telescopic end of the fourth telescopic rod 19 drives the adjacent rotating plate 18 to move, the rotating plate 18 presses the mounting plate at the upper end of the adjacent second limiting column 29 upwardly through the limiting connecting plate 30 thereon, and then the second limiting column 29 moves upwardly, and the second limiting column 29 moves out of the through hole of the adjacent limiting frame 27, and then under the elastic force of the fourth elastic member 26, the first limiting column 25 slides along the adjacent second fixing plate 24, and the first limiting column 25 loses the match with the blind hole of the adjacent sliding rod 20. After the sliding rod 20 is released from the limit, under the pulling force of the third elastic member 241, the sliding rod 20 moves along the lower side of the adjacent support plate 13 The fixed block slides, and the sliding rod 20 drives the connecting frame 21 and the parts thereon to move. When the limit hook 23 loses contact with the adjacent second fixed plate 24, the one-way rotating wheel 22 drives the limit hook 23 to rotate under the action of the torsion force of the torsion spring. Then the limit hook 23 is squeezed on the side wall of the I-beam and slides along the I-beam. When the limit hook 23 loses contact with the I-beam, the limit hook 23 swings to a position perpendicular to the I-beam and then stops rotating, and the one-way rotating wheel 22 can only swing in one direction. At this time, the limit hook 23 is in a locked state, and the sliding rod 20 is also limited by the fixed block on the lower side of the adjacent support plate 13, and the sliding rod 20 stops sliding further.

[0043] When the I-beam slides sideways in the air, the I-beam will slide into two adjacent limit hooks 23. Since the sliding rod 20 is in a fixed state, a supporting force is applied to the outer end of the I-beam to prevent the I-beam from sliding and causing a construction accident. After the I-beam is placed back on the ground, the staff will actively reset the sliding rod 20 and the parts thereon, and make the first limit column 25 cooperate with the blind hole of the adjacent sliding rod 20 again. During normal lifting, the limit hook 23 will not pop out to block the connection between the I-beam and the bracket on the column, and will only pop out when the welding between the lifting ear and the I-beam is broken, which further improves the practicality of the present invention.

[0044] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A safe lifting device for steel structure engineering construction, comprising a support plate (1), wherein the support plate (1) is hinged with a symmetrical first connecting seat (2), characterized in that: The invention also comprises a symmetrical first telescopic rod (3), the first telescopic rod (3) being fixedly connected to the adjacent first connecting seat (2), the first telescopic rod (3) being filled with hydraulic oil, the telescopic end of the first telescopic rod (3) being fixedly connected to the second connecting seat (4), a symmetrical first elastic member (401) being fixedly connected between the first telescopic rod (3) and the adjacent second connecting seat (4), a fixed rod (5) being hingedly connected to one end of the second connecting seat (4) away from the first connecting seat (2) through a rotating shaft, the fixed rod (5) being slidably connected to a sliding frame (6), the fixed rod (5) being fixedly connected to a first fixed plate (7), a second elastic member (8) being fixedly connected between the first fixed plate (7) and the adjacent sliding frame (6), the fixed rod (5) A hook (9) is hingedly connected to one end away from the second connecting seat (4); the sliding frame (6) is fixedly connected with symmetrical connecting ropes (10); the symmetrical connecting ropes (10) are commonly fixedly connected with a square plate (11); the square plate (11) is slidably connected with four L connecting plates (12) through a mounting seat; the L connecting plates (12) located on the same side of the I-beam are commonly fixedly connected with a support plate (13); the support plate (13) is used to support the I-beam; second telescopic rods (14) are respectively fixedly connected to the four mounting seats of the square plate (11); the telescopic ends of the second telescopic rods (14) are fixedly connected to the adjacent L connecting plates (12); and oil guide pipes are connected between the first telescopic rod (3) and the four adjacent second telescopic rods (14).

2. A safety lifting device for steel structure construction according to claim 1, characterized in that: The supporting hanging plate (1), the first connecting seat (2) and the hanging hook (9) are located on the same straight line and are used to keep the first telescopic rod (3) in a vertically extended state.

3. A safety lifting device for steel structure construction according to claim 1, characterized in that: A through hole is provided in the middle of the square plate (11), and the through hole of the square plate (11) is used to cooperate with the lifting ear of the I-beam to position the square plate (11).

4. A safety lifting device for steel structure construction according to claim 1, characterized in that: The sum of the elastic forces of adjacent first elastic members (401) is greater than the weight of all parts on the first telescopic rod (3), so as to ensure that the telescopic end of the first telescopic rod (3) is in a contracted state.

5. A safe lifting device for steel structure construction according to claim 3, characterized in that: The invention also comprises a clamping support mechanism, wherein the clamping support mechanism is arranged on both sides of the square plate (11), and the clamping support mechanism is used to apply a shear force to the I-beam, and the clamping support mechanism comprises a symmetrical third telescopic rod (15), and the symmetrical third telescopic rod (15) is fixedly connected to the first fixed plate (7) through a mounting plate, and the third telescopic rod (15) is filled with hydraulic oil, and the telescopic end of the third telescopic rod (15) passes through the adjacent sliding frame (6), and the top and middle of the telescopic part of the third telescopic rod (15) are fixedly connected to the limit plate, and the limit plate on the telescopic part of the third telescopic rod (15) is limitedly matched with the adjacent sliding frame (6), and the support plate (13) is fixedly connected to a support seat (16), the support seat (16) is rotatably connected to a rotating plate through a rotating shaft, the rotating plate on the support seat (16) is fixedly connected to a symmetrical fixed column (17), the middle part of the fixed column (17) is a hard steel column, the outer side of the fixed column (17) is wrapped with a layer of friction rubber, the rotating shaft of the rotating plate on the support seat (16) is fixedly connected to a rotating plate (18), the rotating plate (18) is provided with a through groove, the support plate (13) is fixedly connected to a fourth telescopic rod (19) through a mounting seat, the telescopic end of the fourth telescopic rod (19) is slidably matched with the same side of the adjacent rotating plate (18) through a connecting shaft, and the symmetrical fourth telescopic rods (19) are respectively connected to the symmetrical third telescopic rods (15) through oil guide pipes.

6. A safety lifting device for steel structure construction according to claim 5, characterized in that: The support plate (13) further comprises an anti-skid mechanism, which is arranged on both sides of the square plate (11), and is used to prevent the I-beam from tilting and sliding sideways when being lifted, and the anti-skid mechanism comprises a symmetrical sliding rod (20), and a guide groove is arranged on the upper side of the sliding rod (20), and a fixed block is arranged at the bottom of the support plate (13), and the sliding rod (20) is slidably connected to the fixed block at the bottom of the adjacent support plate (13) through the guide groove thereon, and the sliding rod (20) and the fixed block on the adjacent support plate (13) are connected to each other. The sliding rod (20) is fixedly connected to a connecting frame (21), the connecting frame (21) is equipped with a one-way rotating wheel (22), a torsion spring is fixedly connected between the one-way rotating wheel (22) and the adjacent connecting frame (21), the one-way rotating wheel (22) is fixedly connected to a limiting hook (23), the limiting hook (23) is used to limit the side of the I-beam, a limiting component is arranged between the support plate (13) and the adjacent rotating plate (18), and the limiting component is used to limit the adjacent sliding rod (20).

7. A safety lifting device for steel structure construction according to claim 6, characterized in that: The sliding rods (20) on both sides of the I-beam are at different heights, so as to ensure that the limit hooks (23) on both sides of the I-beam are in contact with the vertical parts of the I-beam at the same time.

8. A safety lifting device for steel structure construction according to claim 7, characterized in that: The width of the notch of the limiting hook (23) is greater than the thickness of the vertical portion of the I-beam, so as to ensure that the limiting hook (23) and the vertical portion of the I-beam are limited.

9. A safety lifting device for steel structure construction as claimed in claim 8, characterized in that: The limiting assembly includes a second fixing plate (24), the second fixing plate (24) being fixedly connected to the adjacent supporting plate (13), the end of the sliding rod (20) away from the limiting hook (23) being fixedly connected to a mounting plate, the second fixing plate (24) being limitedly matched with the adjacent limiting hook (23), a third elastic member (241) being fixedly connected between the second fixing plate (24) and the mounting plate on the adjacent sliding rod (20), the second fixing plate (24) being slidably connected to a first limiting column (25), the end of the first limiting column (25) away from the sliding rod (20) being fixedly connected to the mounting plate, a fourth elastic member (26) being fixedly connected between the mounting plate of the first limiting column (25) and the second fixing plate (24), the sliding rod (20) being provided with a blind hole, the first limiting column (25) being limitedly matched with the blind hole of the adjacent sliding rod (20), the middle part of the first limiting column (25) being fixedly connected to the mounting plate, the first limiting column (25) being limitedly matched with the blind hole of the adjacent sliding rod (20), the middle part of the first limiting column (25) being fixedly connected to the mounting plate, the first limiting column (25) being fixedly connected to the mounting plate, the third elastic member (26) being fixedly connected between the second fixing plate (24), the first limiting column (25) and the mounting plate The mounting plate in the middle of a limiting column (25) is limitedly matched with the adjacent second fixing plate (24); the mounting plate at the end of the first limiting column (25) is fixedly connected to a limiting frame (27); the support plate (13) is fixedly connected to a third fixing plate (28); the limiting frame (27) and the third fixing plate (28) are both provided with through holes; the through holes of the limiting frame (27) and the through holes of the adjacent third fixing plate (28) are both provided with a second limiting column (29); The second limiting column (29) is limitedly matched with the adjacent limiting frame (27) and the third fixed plate (28); one end of the second limiting column (29) away from the limiting frame (27) is fixedly connected to a mounting plate; the side of the rotating plate (18) close to the adjacent second limiting column (29) is fixedly connected to a limiting connecting plate (30); the limiting connecting plate (30) is provided with a through hole, and the second limiting column (29) is located in the through hole of the adjacent limiting connecting plate (30).

10. A safety lifting device for steel structure construction according to claim 9, characterized in that: The diameter of the through hole of the limiting connecting plate (30) is larger than the diameter of the second limiting column (29), and the diameter of the through hole of the limiting connecting plate (30) is smaller than the diameter of the end mounting plate of the second limiting column (29). The limiting connecting plate (30) cooperates with the end mounting plate of the second limiting column (29) to drive the second limiting column (29) to be removed from the through holes of the adjacent limiting frame (27) and the third fixing plate (28).

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