Hoisting equipment for steel structure installation

Abstract

The invention discloses hoisting equipment for steel structure installation, and relates to the technical field of steel structure hoisting, the hoisting equipment comprises a hoisting arm and a hydraulic device, the end, away from the hoisting arm, of the hydraulic device is provided with a telescopic clamping jaw, the hoisting arm is internally provided with a moving assembly, and the outer side of the hydraulic device is provided with an anti-falling assembly and a rebound assembly; according to the anti-falling device for the steel structure, locking claws on a follow-up disc are meshed with inner ring teeth of a locking disc, and the follow-up disc is matched with an annular disc, so that a hanging belt is rapidly locked, and therefore the anti-falling effect of the steel structure is achieved, large enough force is applied at the moment when the steel structure falls, a rotating shaft drives the annular disc to rapidly rotate, and the anti-falling effect of the steel structure is achieved. The follow-up disc and the locking disc are combined through centrifugal force, so that the sling is rapidly locked, the whole equipment has redundant protection of the sling, a steel structure can be effectively prevented from continuously falling, falling accidents are avoided, and the safety of constructors is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of steel structure hoisting, and in particular to hoisting equipment for steel structure installation. Background Art

[0002] Offshore platform-based observation stations are all composed of steel structures, and hoisting equipment is required for installation. It plays a key role in lifting, moving and accurately placing steel structure components to ensure the safety and efficiency of construction. The existing steel structure hoisting equipment is only equipped with telescopic clamps for clamping and fixing the steel structure. If the hydraulic device driving the telescopic clamps fails or the clamps are not correctly fixed by humans, the steel structure may fall during transportation after the clamps clamp the steel structure. The falling of the steel structure may cause injuries or even death to construction workers or surrounding personnel, especially in high-rise buildings or busy construction sites. In addition, the telescopic clamps of the existing steel structure hoisting equipment are fixedly installed. When clamping steel structures of different lengths, the fixedly installed telescopic clamps cannot be flexibly adjusted according to the midpoint position of the steel structures of different lengths, so that the clamping point is far from the midpoint position of the steel structure, resulting in the risk of the steel structure falling off due to the center of gravity shift during the hoisting process. In order to solve the above problems, the inventor proposed a hoisting device for steel structure installation. Summary of the invention

[0003] In order to solve the above technical problems, a hoisting device for steel structure installation is provided. This technical solution solves the problems of steel structure falling and transportation proposed in the above background technology. To achieve the above objectives, the present invention can be implemented by the following technical solutions: The present invention provides a hoisting device for steel structure installation, comprising a suspension arm and a hydraulic device, wherein a telescopic clamp is installed at one end of the hydraulic device away from the suspension arm; The outer side of the hydraulic device is provided with an anti-falling assembly, and the anti-falling assembly includes a fixing frame symmetrically fixedly connected to the outer wall of the hydraulic device, and the fixing frames are provided with no less than two. A rotating shaft is rotatably connected to the fixing frame, and a sling is wrapped around the outer ring surface of the rotating shaft. An insert is fixedly connected to the end of the sling away from the rotating shaft, and a square hole is provided on the surface of the insert. A locking plate is fixedly connected to the side of the fixing frame away from the hydraulic device, and an annular plate is fixedly connected to the end of the rotating shaft close to the locking plate. A follower plate is rotatably connected to the outer ring surface of the annular plate, and a locking tooth is provided on the outer wall of the follower plate. A limiting block is fixedly connected to the inner ring surface of the follower plate, and the limiting block is located at On the motion trajectory of the annular disk, a support frame is fixedly connected to the hydraulic device, and at least two support frames are provided. A limiting hole is provided on the surface of the support frame, and a rotating block is rotatably connected to the support frame. A spring telescopic rod is fixedly connected to the inner cavity of the rotating block, and a bottom plate is fixedly connected to the bottom of the spring telescopic rod. A jack is provided at the bottom of the rotating block, and a trigger member is rotatably connected to the inner cavity of the rotating block. A connecting spring is fixedly connected to the surface of the trigger member, and each rotating block inner cavity is symmetrically provided with fixed grooves, and at least two groups of fixed grooves are provided. A small spring is fixedly connected to the fixed groove, and a reset block is fixedly connected to the side of the small spring away from the fixed groove.

[0004] Preferably, the rotating shaft is fixedly connected to the sling, the sling is matched with the limiting hole, the plug is in a "T" shape, the plug is slidably connected to the plug hole, and the square hole is matched with the trigger member.

[0005] Preferably, the locking plate is meshingly connected to the follower plate.

[0006] Preferably, the connecting spring is fixedly connected to the rotating block, the reset block is in a "soil" shape, and the reset block is slidably connected to the fixing groove.

[0007] Preferably, a rebound assembly is provided on the outside of the hydraulic device, and the rebound assembly includes a disc fixedly connected to a fixed frame, a limiting block is fixedly connected to the inside of the disc, a clockwork spring is rotatably connected to the inside of the disc, a limiting column is fixedly connected to the inside of the disc, a plurality of limiting columns are provided and arranged in a circle, a linkage column is rotatably connected to the inside of the disc, and a limiting groove is provided on the surface of the linkage column.

[0008] Preferably, one end of the clockwork spring is located at the bottom of the limiting block, one end of the clockwork spring close to the middle of the disc is plugged into the limiting groove on the linkage column, the limiting column is located on the outer wall of the clockwork spring, and the linkage column is fixedly connected to the rotating shaft.

[0009] Preferably, a moving component is provided inside the boom, and the moving component includes a servo motor fixedly connected to the inside of the boom, the output shaft of the servo motor is fixedly connected to a threaded rod, the outer surface of the threaded rod is threadedly connected to a moving block, the inside of the servo motor is fixedly connected to a guide rod, the side wall of the inner cavity of the boom is symmetrically rotatably connected to synchronous wheels, two synchronous wheels are provided, a synchronous belt is sleeved between the synchronous wheels, the outer wall of the synchronous belt is fixedly connected to a counterweight block, and the surface of the boom is fixedly connected to a sliding rod.

[0010] Preferably, the moving block is fixedly connected to the hydraulic device, the threaded rod is rotationally connected to the boom, and the moving block is slidingly connected to the guide rod.

[0011] Preferably, the moving block is fixedly connected to the synchronous belt, and the counterweight block is slidably connected to the sliding rod.

[0012] From the above, the advantages of the present invention are: The locking claw on the follower disk is meshed with the inner ring teeth of the locking disk, and cooperates with the annular disk to quickly lock the sling, thereby achieving the effect of preventing the steel structure from falling. Compared with the prior art, which only uses mechanical clamps to clamp and fix the steel structure without any anti-falling measures, the present device uses the steel structure to apply a sufficiently large force at the moment of falling, so that the rotating shaft drives the annular disk to rotate rapidly, and uses centrifugal force to combine the follower disk with the locking disk, so as to quickly lock the sling, avoiding the prior art that relies on the telescopic clamp to fix. If the hydraulic device fails, the telescopic clamp cannot clamp the steel structure, causing the steel structure to fall out of control. In this way, the entire equipment has redundant protection of the sling, which can effectively prevent the steel structure from continuing to fall, thereby avoiding the occurrence of falling accidents and ensuring the safety of construction workers.

[0013] After the telescopic clamps clamp and fix the steel structure, the slings are passed around the bottom of the steel structure and fixed, so that the slings can support the steel structure. Compared with the method of using only mechanical clamps in the prior art, the present device uses the slings to form a more uniform support along the bottom of the steel structure. When used in conjunction with the telescopic clamps, it can more flexibly disperse the force on the steel structure, avoiding the situation where the telescopic clamps need to bear all the weight of the steel structure and are in a high-load state for a long time when the steel structure is lifted by the telescopic clamps alone. In this way, the upward pulling force is applied to the steel structure through the cooperation between the sling and the clockwork spring, thereby reducing the burden on the telescopic clamps, reducing equipment wear, and helping to extend the service life of the telescopic clamps and lifting equipment.

[0014] By moving the moving block, the hydraulic device and the telescopic clamp are driven to move together, so that the telescopic clamp can clamp the midpoint of the steel structure. Compared with the method of fixedly installing the telescopic clamp in the prior art, the present device utilizes the additional moving block to allow the telescopic clamp to move freely in a horizontal position, thereby moving to just above the midpoint of the steel structure. When the telescopic clamp can move and adjust the clamping point according to the geometric center of the steel structure, it can ensure that the center of gravity of the steel structure is always below the vertical position of the telescopic clamp during hoisting, thereby keeping the hoisting system in a balanced state. In this way, it can avoid the use of a fixed clamp position for hoisting. Due to the difference in lengths of different steel structures, the clamping point is far away from the midpoint of the steel structure, resulting in the risk of tipping over, shaking or even falling off due to the shift in the center of gravity during the hoisting process.

[0015] When the steel structure is transported by the moving block, the counterweight block moves synchronously in the direction opposite to the moving direction of the moving block, so as to ensure stability during transportation. Compared with the prior art which usually adopts the method without adding weight blocks, the present device uses the reverse movement of the counterweight block to provide reverse torque, which effectively balances the change of the center of gravity of the boom and avoids the risk of equipment instability or overturning caused by the change of the center of gravity of the boom. In addition, in the method without configuring the weight block, when the equipment is operating at high altitude or under windy conditions, it is easy to be affected by external forces. By moving the counterweight block synchronously with the movement of the moving block, the balance of the boom can be maintained, the swing amplitude of the boom can be reduced, and the operation safety can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front perspective schematic diagram of the overall structure shown in the present invention; Figure 2 It is a three-dimensional schematic diagram of the interior of the boom shown in the present invention; Figure 3 It is a three-dimensional schematic diagram of the anti-fall assembly shown in the present invention; Figure 4 It is an exploded stereoscopic schematic diagram of the rotating shaft and the sling shown in the present invention; Figure 5 It is a schematic diagram of the internal cross-section of the locking plate shown in the present invention; Figure 6 It is a three-dimensional schematic diagram of the sling and the insert-related parts shown in the present invention; Figure 7 It is an exploded three-dimensional schematic diagram of the support frame and the sling shown in the present invention; Figure 8 It is a three-dimensional schematic diagram of the interior of the rotating block shown in the present invention; Fig. 9 It is an exploded stereoscopic schematic diagram of the rotating block and the trigger member shown in the present invention; Fig.10It is a three-dimensional schematic diagram of the interior of a disc cut away from the present invention; Fig.11 It is a three-dimensional schematic diagram of the servo motor and the moving block related components shown in the present invention; Fig.12 It is a three-dimensional schematic diagram of the counterweight block and sliding rod related parts shown in the present invention.

[0017] Among them, the accompanying drawings in the present invention are: 1. Boom; 2. Hydraulic device; 3. Telescopic gripper; Anti-fall components: 41, fixed frame; 42, rotating shaft; 43, sling; 44, insert; 45, square hole; 46, locking plate; 47, annular plate; 48, follower plate; 49, limit block; 410, support frame; 411, limit hole; 412, rotating block; 413, spring telescopic rod; 414, bottom plate; 415, jack; 416, trigger; 417, connecting spring; 418, fixing slot; 419, small spring; 420, reset block; Rebound assembly: 51, disc; 52, limiting block; 53, spring; 54, limiting column; 55, linkage column; Moving components: 61, servo motor; 62, threaded rod; 63, moving block; 64, guide rod; 65, synchronous wheel; 66, synchronous belt; 67, counterweight block; 68, sliding rod. DETAILED DESCRIPTION

[0018] The technical solutions 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 only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0019] See also Figures 1 to 12 As shown, an embodiment of the present invention is provided, and a hoisting device for steel structure installation is provided and will be described in detail below: The following content is aimed at the assembly of steel structures such as offshore observation stations, marine hydrological and meteorological platforms, in order to solve problems such as assembly and hoisting of steel structures of offshore observation platforms.

[0020] Embodiment 1: A lifting device for steel structure installation, such as Figure 1 and Figure 2 As shown, it includes a boom 1 and a hydraulic device 2, and a telescopic clamp 3 is installed at one end of the hydraulic device 2 away from the boom 1. The hydraulic device 2 is used to drive the telescopic clamp 3 so that the telescopic clamp 3 can clamp the steel structure, thereby performing the hoisting work; like Figures 2 to 9As shown, the outer side of the hydraulic device 2 is provided with an anti-falling assembly, which includes a fixing frame 41 symmetrically fixedly connected to the outer side wall of the hydraulic device 2, and at least two fixing frames 41 are provided. A rotating shaft 42 is rotatably connected to the fixing frame 41, and a sling 43 is wound around the outer ring surface of the rotating shaft 42. An insert 44 is fixedly connected to the end of the sling 43 away from the rotating shaft 42, and a square hole 45 is opened on the surface of the insert 44. A locking plate 46 is fixedly connected to the side of the fixing frame 41 away from the hydraulic device 2, and the rotating shaft 42 is wound around the outer ring surface of the sling 43. One end of 42 near the locking plate 46 is fixedly connected with an annular plate 47, and the outer ring surface of the annular plate 47 is rotatably connected with a follower plate 48, and the outer wall of the follower plate 48 is provided with locking teeth, and the follower plate 48 is in contact with the annular plate 47, and the inner ring surface of the follower plate 48 is fixedly connected with a limit block 49, and the limit block 49 is located on the motion track of the annular plate 47, and the limit block 49 is in contact with one end of the annular plate 47. The hydraulic device 2 is symmetrically fixedly connected with a support frame 410, and the support frame 410 is provided with no less than two The support frame 410 has a limited hole 411 on its surface, and a rotating block 412 is rotatably connected to the support frame 410. A spring telescopic rod 413 is fixedly connected to the inner cavity of the rotating block 412. The spring telescopic rod 413 is composed of a telescopic rod and a spring sleeved on the outer side of the telescopic rod. The bottom of the spring telescopic rod 413 is fixedly connected to a bottom plate 414. A socket 415 is provided at the bottom of the rotating block 412. A trigger member 416 is rotatably connected to the inner cavity of the rotating block 412, and one end of the trigger member 416 is connected to the bottom plate 414. 14 conflicts with each other, a connecting spring 417 is fixedly connected to the surface of the trigger member 416, and one end of the connecting spring 417 away from the trigger member 416 is fixedly connected to the top surface of the inner cavity of the rotating block 412, and each rotating block 412 inner cavity is symmetrically provided with fixing grooves 418, and there are no less than two groups of fixing grooves 418, and each group of fixing grooves 418 is provided with two, and a small spring 419 is fixedly connected to the fixing groove 418, and a reset block 420 is fixedly connected to the side of the small spring 419 away from the fixing groove 418.

[0021] Further, such as Figure 4 As shown, the outer surface of the rotating shaft 42 is fixedly connected to the inner end of the sling 43, the width of the sling 43 is adapted to the width of the limiting hole 411, the sling 43 passes through the limiting hole 411, the shape of the plug 44 is "T" shape, the plug 44 is slidably connected to the plug hole 415, and the square hole 45 is adapted to the trigger member 416.

[0022] Further, such as Figure 5 As shown, the teeth on the inner ring of the locking plate 46 are meshingly connected with the locking teeth on the follower plate 48 .

[0023] Further, such as Figure 8 and Fig. 9 As shown, the reset block 420 is in the shape of a “soil”, and the reset block 420 is slidably connected to the fixing groove 418 .

[0024] Further, such as Fig.10As shown, a rebound assembly is provided on the outer side of the hydraulic device 2, and the rebound assembly includes a disc 51 fixedly connected to the fixed frame 41, and the disc 51 is located on the side of the fixed frame 41 away from the locking plate 46, and a limiting block 52 is fixedly connected to the inner ring surface of the disc 51, and a clockwork spring 53 is rotatably connected inside the disc 51, and a limiting column 54 is fixedly connected inside the disc 51, and a plurality of limiting columns 54 are provided and arranged in a circle, and a linkage column 55 is rotatably connected to the inner center position of the disc 51, and a limiting groove is provided on the outer surface of the linkage column 55.

[0025] Further, such as Fig.10 As shown, one end of the clockwork spring 53 is located at the bottom of the limiting block 52, and the end of the clockwork spring 53 close to the center of the disk 51 is inserted into the limiting groove on the linkage column 55. The limiting columns 54 are all located on the outer wall of the clockwork spring 53. The limiting columns 54 cooperate with the limiting block 52 to limit the rotation of the clockwork spring 53 when it is wound. The linkage column 55 is fixedly connected to the end of the rotating shaft 42 away from the annular disk 47.

[0026] When working: The device can support the steel structure and prevent it from falling. The detailed steps are as follows: First, the steel structure is clamped and fixed. The staff controls the hydraulic device 2 and the telescopic clamp 3 through the controller to make the telescopic clamp 3 descend. When the telescopic clamp 3 descends to the position of the steel structure, the staff controls the telescopic clamp 3 through the controller to make the telescopic clamp 3 clamp the steel structure. After the telescopic clamp 3 clamps and fixes the steel structure, the staff pulls the insert 44 so that the sling 43 on the rotating shaft 42 is pulled out from the limiting hole 411 and moves with the insert 44. Then, the insert 44 and the sling 43 are passed around the bottom of the steel structure, and the steel structure is tied with the sling 43, and then the insert 44 is inserted into the socket 415. During the process of inserting the plug 44 into the insertion hole 415, the end of the plug 44 squeezes the elbow portion of the trigger member 416 close to the bottom plate 414, so that the trigger member 416 rotates clockwise with the rotation connection with the rotating block 412 as the axis, and the connecting spring 417 is compressed by the trigger member 416. At the same time, during the insertion process, the plug 44 pushes the bottom plate 414, so that the spring telescopic rod 413 contracts until the elbow of the trigger member 416 close to the bottom plate 414 contacts the square hole 45 on the plug 44. At this time, the trigger member 416 stops rotating clockwise, and as the plug 44 is continuously inserted, the trigger member 416 rotates counterclockwise with the help of the rebound of the connecting spring 417 in the compressed state until it rotates back to the initial position. At this time, the elbow portion of the trigger member 416 close to the bottom plate 414 has been inserted into the square hole 45 on the plug 44, thereby preventing the plug 44 from detaching from the rotating block 412. When the sling 43 is being pulled out, the rotating shaft 42 rotates clockwise, driving the linkage column 55 to rotate clockwise, so that the winding part of the spring 53 rotates together with the linkage column 55, and the winding part of the spring 53 is stretched, thereby storing torque energy; After the elbow portion of the trigger member 416 near the bottom plate 414 is inserted into the square hole 45 on the insert 44, the insert 44 cannot be separated from the rotating block 412, and the sling 43 at the bottom of the steel structure applies an upward pulling force to the steel structure by means of the torque energy stored in the spring 53; In the above process, after the telescopic clamp 3 clamps and fixes the steel structure, the sling 43 is passed around the bottom of the steel structure and fixed, so that the sling 43 supports the steel structure. Compared with the method of using only mechanical clamps in the prior art, the present device uses the sling 43 to form a more uniform support along the bottom of the steel structure. When used in conjunction with the telescopic clamp 3, it can more flexibly disperse the force on the steel structure, avoiding the telescopic clamp 3 having to bear all the weight of the steel structure and being in a high-load state for a long time when the steel structure is lifted only by the telescopic clamp 3. In this way, through the cooperation between the sling 43 and the clockwork spring 53, an upward pulling force is applied to the steel structure to reduce the burden on the telescopic clamp 3, reduce equipment wear, and help extend the service life of the telescopic clamp 3 and the lifting equipment.

[0027] When the insert 44 is inserted into the rotating block 412, the staff uses the controller to raise the telescopic clamp 3 to prepare for the transportation of the steel structure. If during the transportation of the steel structure, the telescopic clamp 3 that drives the telescopic clamp 3 to clamp and fix fails, and the clamping of the steel structure is unstable due to the center of gravity problem, causing the telescopic clamp 3 to accidentally open or the steel structure to slip, thereby losing the clamping and fixing of the steel structure, it will cause the steel structure to fall. At the moment of falling, the steel structure has a large gravitational potential energy in the air, which will suddenly pull the sling 43, The rotating shaft 42 is caused to rotate rapidly clockwise. During the rapid clockwise rotation of the rotating shaft 42, the annular disc 47 is driven to rotate rapidly clockwise together, so that the follower disc 48 on the annular disc 47 is acted upon by inertia, and the locking claw on the follower disc 48 meshes with the teeth of the inner ring of the locking disc 46, and the follower disc 48 clamps the annular disc 47 to prevent the annular disc 47 from rotating further, thereby stopping the rotating shaft 42 from rotating. In this way, the sling 43 cannot be pulled by the falling of the steel structure, thereby preventing the falling of the steel structure, and the steel structure is pulled by the sling 43. When the staff discovered the above situation, they used the controller to rotate the boom 1 and slowly lower it. When the steel structure landed on the ground stably, they overhauled the hydraulic device 2 and the telescopic clamp 3 and prepared for lifting again. In the above process, the locking claw on the follower plate 48 is meshed with the inner ring teeth of the locking plate 46, and cooperates with the annular plate 47 to quickly lock the sling 43, thereby achieving the effect of preventing the steel structure from falling. Compared with the prior art, which only uses mechanical clamps to clamp and fix the steel structure without configuring anti-falling measures, the present device uses the steel structure to apply a sufficiently large force at the moment of falling, so that the rotating shaft 42 drives the annular plate 47 to rotate rapidly, so that the follower plate 48 on the annular plate 47 is affected by inertia, and further the follower plate 48 is combined with the locking plate 46, so that the sling 43 is quickly locked, avoiding the prior art that relies on the telescopic clamp 3 for fixation. If the hydraulic device 2 fails, the telescopic clamp 3 cannot clamp the steel structure, causing the steel structure to fall out of control. In this way, the entire equipment has redundant protection of the sling 43, which can effectively prevent the steel structure from continuing to fall, thereby avoiding the occurrence of falling accidents and ensuring the safety of construction personnel.

[0028] Embodiment 2: Further, as Fig.11 and Fig.12 As shown, a moving assembly is provided inside the boom 1, and the moving assembly includes a servo motor 61 fixedly connected to the bottom surface of the inner cavity of the boom 1, the output shaft of the servo motor 61 is fixedly connected to a threaded rod 62, and a moving block 63 is threadedly connected to the outer surface of the threaded rod 62, and the moving block 63 is located in the middle position of the inner cavity of the boom 1, and a guide rod 64 is fixedly connected to the inner cavity side wall of the servo motor 61, and a synchronous wheel 65 is symmetrically connected to the inner cavity side wall of the boom 1 for rotation, and two synchronous wheels 65 are provided, and a synchronous belt 66 is sleeved between the synchronous wheels 65, and the two synchronous wheels 65 are connected for transmission by the synchronous belt 66, and the synchronous wheels 65 and the synchronous belt 66 are both located above the moving block 63, and a counterweight block 67 is fixedly connected to the outer surface of the synchronous belt 66, and the counterweight block 67 is in contact with the top surface of the boom 1, and the counterweight block 67 is located above the synchronous belt 66, and the counterweight block 67 and the moving block 63 are located on the same vertical line, and a sliding rod 68 is fixedly connected to the upper surface of the boom 1.

[0029] Further, such as Fig.11 As shown, the bottom surface of the moving block 63 is fixedly connected to the top surface of the hydraulic device 2, the end of the threaded rod 62 away from the servo motor 61 is rotatably connected to the inner cavity side wall of the boom 1, and the moving block 63 is slidably connected to the outer surface of the guide rod 64.

[0030] Further, such as Fig.11 and Fig.12 As shown, the moving block 63 is fixedly connected to the outer surface of the synchronous belt 66, and the counterweight block 67 is slidably connected to the outer surface of the sliding rod 68. By utilizing the synchronization effect of the synchronous belt 66, when the moving block 63 moves, the counterweight block 67 moves synchronously in the direction opposite to the moving direction of the moving block 63.

[0031] When working: The device can move the hydraulic device 2 and the telescopic clamp 3 so that the telescopic clamp 3 clamps the middle position of the steel structure. The detailed steps are as follows: Since the lengths of the steel structures to be installed are not equal, in order to avoid the steel structure falling off due to the center of gravity problem, the staff needs to adjust the position of the telescopic clamp 3 according to the position of the midpoint of the steel structure, so as to clamp the middle of the steel structure; The staff controls the servo motor 61 to start through the controller, so that the output shaft of the servo motor 61 rotates forward or reversely as needed. When the midpoint of the steel structure is located on the side away from the servo motor 61, the staff controls the output shaft of the servo motor 61 to rotate forward through the controller, and the moving block 63 moves along the guide rod 64 in the direction away from the servo motor 61. The moving block 63 drives the hydraulic device 2 and the telescopic clamp 3 to move together until the hydraulic device 2 and the telescopic clamp 3 move to just above the midpoint of the steel structure. At this time, the staff controls the output shaft of the servo motor 61 to stop rotating forward through the controller, and the staff controls the hydraulic device 2 and the telescopic clamp 3 through the controller, so that the telescopic clamp 3 descends and clamps the steel structure. The clamping position is the midpoint of the steel structure. When the telescopic clamp 3 has clamped and fixed the steel structure, the staff controls the hydraulic device 2 through the controller to make the telescopic clamp 3 rise to the height required for lifting, and then the telescopic clamp 3 stops rising. When the midpoint of the steel structure is located on the side close to the servo motor 61, the staff reverses the output shaft of the servo motor 61 through the controller, and the moving block 63 moves along the guide rod 64 toward the side close to the servo motor 61, and the moving block 63 drives the hydraulic device 2 and the telescopic clamp 3 to move together until the hydraulic device 2 and the telescopic clamp 3 move to just above the midpoint of the steel structure. At this time, the staff stops reversing the output shaft of the servo motor 61 through the controller, and controls the hydraulic device 2 and the telescopic clamp 3 through the controller, so that the telescopic clamp 3 descends and clamps the steel structure, and the clamping position is the midpoint of the steel structure. When the telescopic clamp 3 has clamped and fixed the steel structure, the staff controls the hydraulic device 2 through the controller to make the telescopic clamp 3 rise to the height required for lifting, and then the telescopic clamp 3 stops rising; In the above process, the movement of the moving block 63 drives the hydraulic device 2 and the telescopic clamp 3 to move together, so that the telescopic clamp 3 can clamp the midpoint of the steel structure. Compared with the fixed installation method of the telescopic clamp 3 usually adopted in the prior art, the present device uses the additional moving block 63 to allow the telescopic clamp 3 to move freely in a horizontal position, thereby moving to the top of the midpoint of the steel structure. When the telescopic clamp 3 is able to move and adjust the clamping point according to the geometric center of the steel structure, it can ensure that the center of gravity of the steel structure is always below the vertical position of the telescopic clamp 3 during hoisting, so that the hoisting system is in a balanced state. In this way, it can avoid the use of a fixed clamp position for hoisting. Due to the difference in length of different steel structures, the clamping point is far away from the midpoint of the steel structure, resulting in the risk of tipping, shaking or even falling off due to the shift of the center of gravity during the hoisting process.

[0032] After the telescopic clamp 3 clamps the steel structure, the staff uses the controller to make the output shaft of the servo motor 61 rotate forward or reverse according to the lifting position, so that the moving block 63 drives the steel structure to move horizontally. In the process of the moving block 63 driving the steel structure to move along the guide rod 64, since the moving block 63 and the counterweight block 67 are both fixed on the outer surface of the synchronous belt 66, when the moving block 63 moves along the guide rod 64, the moving block 63 drives the synchronous belt 66 to rotate on the synchronous wheel 65, so that the counterweight block 67 moves along the sliding rod 68 in the direction opposite to the moving direction of the moving block 63, and the displacement of the counterweight block 67 is equal to the displacement of the moving block 63. In this way, the force changes caused by the movement of the moving block 63, the hydraulic device 2, the telescopic clamp 3 and the steel structure can be effectively balanced, thereby improving the overall stability during the lifting operation. During the above process, when the steel structure is moved and transported by the moving block 63, the counterweight block 67 moves synchronously in the direction opposite to the moving direction of the moving block 63, so as to ensure stability during transportation. Compared with the prior art which usually adopts the method without adding weight blocks, the present device uses the reverse movement of the counterweight block 67 to provide a reverse torque, which effectively balances the change of the center of gravity of the boom 1 and avoids the risk of equipment instability or overturning caused by the change of the center of gravity of the boom 1. In addition, in the method without configuring weight blocks, when the equipment is operating at high altitude or under windy conditions, it is easy to be affected by external forces. By moving the counterweight block 67 synchronously with the movement of the moving block 63, the balance of the boom 1 can be maintained, the shaking amplitude of the boom 1 can be reduced, and the operation safety can be improved.

[0033] After the steel structure is hoisted, the staff presses the reset block 420 upwards, and the small spring 419 is compressed by the reset block 420 and is in a compressed state, so that the reset block 420 moves vertically upward, and the end of the reset block 420 pushes the trigger member 416, so that the trigger member 416 rotates clockwise with the rotation connection with the rotating block 412 as the axis. In this process, the connecting spring 417 is compressed by the trigger member 416 and is in a compressed state. The elbow part of the trigger member 416 close to the bottom plate 414 is detached from the square hole 45 on the plug 44, and no longer restricts the square hole 45 and the plug 44. At the same time, the spring telescopic rod 413 gradually rebounds to the initial state, and in this process, the plug 44 is ejected from the inside of the rotating block 412. Then the staff releases the reset block 420, and the reset block 420 returns to the initial position with the help of the rebound of the small spring 419, and the trigger member 416 rotates counterclockwise back to the initial position with the help of the rebound of the connecting spring 417. When the insert 44 leaves the rotating block 412, the torque energy stored in the clockwork spring 53 is gradually released, so that the wound portion of the clockwork spring 53 rotates counterclockwise along with the linkage column 55 and gradually rotates back to the initial position. During this process, the linkage column 55 drives the rotating shaft 42 to rotate counterclockwise together, so that the wound portion of the sling 43 rotates counterclockwise along with the rotating shaft 42 and gradually rotates back to the initial position. At the same time, the annular disk 47 rotates counterclockwise along with the rotating shaft 42, and the locking claw on the follower disk 48 is no longer engaged with the teeth of the inner ring of the locking disk 46, and both rotate back to the initial position.

[0034] The above are merely embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lifting device for steel structure installation, comprising a lifting arm (1) and a hydraulic device (2), characterized in that: A telescopic clamp (3) is installed at one end of the hydraulic device (2) away from the boom (1); An anti-falling assembly is arranged outside the hydraulic device (2), and the anti-falling assembly comprises a fixing frame (41) symmetrically fixedly connected to the outer wall of the hydraulic device (2), and at least two fixing frames (41) are arranged, and a rotating shaft (42) is rotatably connected to the fixing frame (41), and a sling (43) is wound around the outer annular surface of the rotating shaft (42), and an insert (44) is fixedly connected to the end of the sling (43) away from the rotating shaft (42), and a square hole (44) is opened on the surface of the insert (44). 5), a locking plate (46) is fixedly connected to a side of the fixing frame (41) away from the hydraulic device (2), an annular plate (47) is fixedly connected to an end of the rotating shaft (42) close to the locking plate (46), an outer ring surface of the annular plate (47) is rotatably connected to a follower plate (48), an outer wall of the follower plate (48) is provided with locking teeth, an inner ring surface of the follower plate (48) is fixedly connected to a limit block (49), and the limit block (49) is located on the movement trajectory of the annular plate (47). The hydraulic device (2) is fixedly connected to a support frame (410), wherein at least two support frames (410) are provided, and a limiting hole (411) is provided on the surface of the support frame (410), and a rotating block (412) is rotatably connected to the support frame (410), and a spring telescopic rod (413) is fixedly connected to the inner cavity of the rotating block (412), and a bottom plate (414) is fixedly connected to the bottom of the spring telescopic rod (413), and a plug hole (412) is provided at the bottom of the rotating block (412). 15), a trigger member (416) is rotatably connected to the inner cavity of the rotating block (412), a connecting spring (417) is fixedly connected to the surface of the trigger member (416), and each of the rotating blocks (412) is symmetrically provided with fixing grooves (418), and at least two groups of the fixing grooves (418) are provided, and a small spring (419) is fixedly connected to the fixing groove (418), and a reset block (420) is fixedly connected to the side of the small spring (419) away from the fixing groove (418).

2. A steel structure installation hoisting device according to claim 1, characterized in that: The rotating shaft (42) is fixedly connected to the sling (43), the sling (43) is matched with the limiting hole (411), the inserting piece (44) is in a "T" shape, the inserting piece (44) is slidably connected to the plug hole (415), and the square hole (45) is matched with the trigger member (416).

3. A steel structure installation hoisting device according to claim 1, characterized in that: The locking plate (46) is meshingly connected with the follower plate (48).

4. The steel structure installation hoisting equipment according to claim 1, characterized in that: The connecting spring (417) is fixedly connected to the rotating block (412); the reset block (420) is in the shape of a "soil"; and the reset block (420) is slidably connected to the fixing groove (418).

5. The steel structure installation hoisting equipment according to claim 1, characterized in that: A rebound assembly is arranged on the outside of the hydraulic device (2), the rebound assembly comprising a disc (51) fixedly connected to a fixed frame (41), a limiting block (52) fixedly connected inside the disc (51), a spring spring (53) rotatably connected inside the disc (51), a limiting column (54) fixedly connected inside the disc (51), a plurality of limiting columns (54) being provided and arranged in a circle, a linkage column (55) rotatably connected inside the disc (51), and a limiting groove being provided on the surface of the linkage column (55).

6. A steel structure installation hoisting device according to claim 5, characterized in that: One end of the clockwork spring (53) is located at the bottom of the limiting block (52), one end of the clockwork spring (53) close to the middle of the disc (51) is plugged into a limiting groove on the linkage column (55), the limiting column (54) is located on the outer wall of the clockwork spring (53), and the linkage column (55) is fixedly connected to the rotating shaft (42).

7. The steel structure installation hoisting equipment according to claim 1, characterized in that: A moving assembly is arranged inside the boom (1), and the moving assembly comprises a servo motor (61) fixedly connected to the inside of the boom (1); the output shaft of the servo motor (61) is fixedly connected to a threaded rod (62); the outer surface of the threaded rod (62) is threadedly connected to a moving block (63); the inside of the servo motor (61) is fixedly connected to a guide rod (64); the inner side wall of the inner cavity of the boom (1) is symmetrically rotatably connected to a synchronous wheel (65); two synchronous wheels (65) are provided, and a synchronous belt (66) is sleeved between the synchronous wheels (65); the outer wall of the synchronous belt (66) is fixedly connected to a counterweight block (67); and the surface of the boom (1) is fixedly connected to a sliding rod (68).

8. A steel structure installation hoisting device according to claim 7, characterized in that: The moving block (63) is fixedly connected to the hydraulic device (2), the threaded rod (62) is rotatably connected to the boom (1), and the moving block (63) is slidably connected to the guide rod (64).

9. The steel structure installation hoisting equipment according to claim 7, characterized in that: The moving block (63) is fixedly connected to the synchronous belt (66), and the counterweight block (67) is slidably connected to the sliding rod (68).

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