Adjustable lifting device for building steel structure installation

Abstract

The invention discloses an adjustable lifting device for building steel structure installation, and belongs to the technical field of lifting equipment.The adjustable lifting device comprises two bottom plates, supporting plates are fixedly installed at the tops of the two bottom plates, and a top plate is arranged above the two supporting plates; the two sides of the two supporting plates are each fixedly provided with a lateral pull rod, the lateral pull rods are fixedly connected with the bottom plates, the bottoms of the bottom plates are rotationally connected with two symmetrically-arranged brake wheels, and the same connecting rod is fixedly installed between the two bottom plates; the lifting mechanism is installed on the supporting plate and is in transmission connection with the top plate, the winding mechanism is installed on the top of the top plate, four steel ropes are arranged on the winding mechanism, and the winding mechanism comprises an installation plate. The steel structure hoisting device is easy to operate and convenient to use, a steel structure can be conveniently and rapidly fixed, meanwhile, the hoisting height can be adjusted, the mounting angle of the steel structure during hoisting can be adjusted, and the stability of the steel structure during mounting can be guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of lifting equipment, and in particular to an adjustable lifting device used for installing a building steel structure. Background Art

[0002] Steel structure is a structure made of steel materials and is one of the main types of building structures. The structure is mainly composed of steel beams, steel columns, steel trusses and other components made of steel sections and steel plates, and adopts rust removal and rust prevention processes such as silanization, pure manganese phosphating, water washing and drying, and galvanizing. The components or parts are usually connected by welds, bolts or rivets. Because of its light weight and simple construction, it is widely used in large factories, venues, super high-rise buildings, bridges and other fields. Steel structures are prone to rust. Generally, steel structures need to be rust-free, galvanized or painted, and they need regular maintenance. When installing steel structures, lifting equipment is generally used for lifting and lowering.

[0003] Defects in the prior art: 1. When lifting steel structures, existing lifting equipment generally uses hooks to hang and install the steel structures. The lifting is not stable enough and is prone to falling when shaking; 2. When hoisting steel structures, existing hoisting equipment usually uses a single steel rope to lift them, which is prone to shaking during lifting. In addition, it is not convenient to fix the angle of the steel structure below, making it inconvenient to install. Summary of the invention

[0004] In view of the problems in the related art, the present invention proposes an adjustable lifting device for installing a building steel structure to overcome the above-mentioned technical problems existing in the existing related art.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: An adjustable lifting device for installing a building steel structure, comprising: Two bottom plates, the tops of the two bottom plates are fixedly mounted with support plates, and a top plate is provided above the two support plates; Both sides of the two support plates are fixedly installed with lateral pull rods, the lateral pull rods are fixedly connected to the bottom plate, the bottom of the bottom plate is rotatably connected to two symmetrically arranged brake wheels, and the same connecting rod is fixedly installed between the two bottom plates; A lifting mechanism is installed on the support plate and is transmission-connected to the top plate; A winding mechanism is installed on the top of the top plate, and four steel ropes are arranged on the winding mechanism. The winding mechanism comprises a mounting plate, and four symmetrical mounting brackets are fixedly installed on the top of the mounting plate. A winding shaft is rotatably connected between two mounting brackets on the same side, and two winding drums are fixedly sleeved on the winding shaft, and the steel ropes are wound on the corresponding winding drums; A clamping mechanism is installed at the bottom ends of the four steel ropes, and the clamping mechanism includes a positioning plate, the positioning plate is connected to the four steel ropes, the bottom of the positioning plate is rotatably connected to a clamping rod, and one end of the clamping rod is fixedly installed with a clamping shaft; An angle adjustment mechanism is installed on the positioning plate and cooperates with the corresponding two steel ropes; The supporting mechanism is installed between the four steel ropes and cooperates with the positioning plate and the four mounting frames.

[0006] Furthermore, the lifting mechanism includes a first motor, a support rod is threadedly connected to the top of the support plate, the two support rods are rotatably connected to the top plate, the first motor is fixedly installed on the top of the top plate, the output shaft of the first motor is threadedly connected to the corresponding support rod, a pulley is fixedly sleeved on the support rod, and the two pulleys are transmission-connected with the same belt.

[0007] The output shaft of the first motor drives the two support rods to rotate simultaneously through the transmission connection of two pulleys and belts. The rotating support rods are connected to the support plate through threads, thereby driving the top plate to move up and down.

[0008] Furthermore, the winding mechanism also includes two positioning boxes, the two positioning boxes are fixedly connected to the corresponding two mounting frames, the winding shaft is rotatably connected to the corresponding positioning boxes, the same active rod is rotatably connected between the two positioning boxes, a second motor is fixedly mounted on one of the two positioning boxes, the output shaft of the second motor is fixedly connected to the active rod, two first worms are fixedly mounted on the active rod, a first worm wheel is fixedly mounted on one end of the winding shaft, and the first worm wheel is meshed with the corresponding first worm wheel.

[0009] The setting of two positioning boxes can position and support the two active rods. At the same time, the output shaft of the second motor drives the active rod to rotate. The active rod drives the winding shaft to rotate through the mutual engagement of the first worm and the first worm wheel. The winding shaft drives the two winding drums to rotate, so that the four steel ropes can be reeled in, and then the steel structure can be lifted and hoisted. At the same time, the engagement of the first worm and the first worm wheel can facilitate self-locking of the winding shaft.

[0010] Furthermore, the clamping mechanism also includes a cylinder, which is fixedly mounted on the top of the positioning plate, and a push plate is fixedly mounted on the piston of the cylinder. The bottom of the push plate is rotatably connected to two symmetrically arranged push rods, and the push rods are rotatably connected to the corresponding clamping rods.

[0011] The piston of the cylinder can drive the push plate to move downward, and the push plate pushes the two push rods to move. The push rods are connected to the clamp rod through rotation, so as to push the clamp rod to change the angle. The clamp rod is clamped and fixed to the steel structure through the clamp shaft.

[0012] Furthermore, a fixing plate is fixedly installed on the bottom of the positioning plate, and an L-shaped clamping plate is fixedly installed on the bottom of the fixing plate, and the L-shaped clamping plate cooperates with two clamping shafts.

[0013] The setting of the L-shaped clamping plate can facilitate the top pressing of the steel structure, thereby clamping and positioning the steel structure.

[0014] Furthermore, the angle adjustment mechanism includes a third motor, two positioning seats are fixedly installed on the top of the positioning plate, the two positioning seats are rotatably connected with the same rotating rod, both ends of the rotating rod are fixedly installed with winch drums, the winch drums are connected with two corresponding steel ropes, and the other two steel ropes are fixedly connected with the positioning plate, a fixing box is fixedly installed on the top of the positioning plate, the third motor is fixedly installed on one side of the fixing box, a rotating shaft is fixedly installed on the output shaft of the third motor, and the rotating shaft is transmission-connected with the rotating rod.

[0015] The rotating rotating rod can drive the two winch drums to rotate. The two winch drums can wind up or pay out the two steel ropes on one side by winding the steel ropes, so that the steel ropes on the left and right sides form an up and down difference, which can drive the steel structure on the positioning plate to adjust the angle, so as to adapt to different installation conditions during installation.

[0016] Furthermore, a second worm is fixedly mounted on the rotating shaft, a second worm wheel is fixedly mounted on the rotating rod, and the second worm and the second worm wheel are meshed with each other.

[0017] The output shaft of the third motor drives the rotating shaft to rotate, and the rotating shaft drives the rotating rod to rotate through the mutual engagement of the second worm and the second worm wheel. At the same time, the mutual engagement of the second worm and the second worm wheel can form a self-locking effect on the rotating rod, thereby stabilizing the angle.

[0018] Furthermore, the supporting mechanism includes a supporting frame, and two wire taking-up drums are fixedly mounted on the winding shaft. The diameter of the wire taking-up drums is half of the diameter of the winding drum. Pull ropes are wound around the wire taking-up drums, and the two pull ropes are fixedly connected to the supporting frame. Two push rods are slidably connected to both sides of the supporting frame, and a wire coil is fixedly mounted on one end of the push rod, and the steel rope is located in the corresponding wire coil.

[0019] The setting of the push rod and the wire coil on the support frame can facilitate the pushing of the four steel ropes, so that the four steel ropes have the force to stretch outward, thereby maintaining the stable angle of the positioning plate. When the winding shaft rotates, it drives the take-up drum to rotate, and the take-up drum shrinks the height of the support frame by pulling the rope. At the same time, the diameter of the take-up drum is set to half of the diameter of the winding drum, so that the support frame can always remain in the middle position between the winding drum and the positioning plate, thereby maintaining the best support state.

[0020] Furthermore, two fixed seats are fixedly installed on the top of the support frame, and the same bidirectional screw is rotatably connected between the two fixed seats, a handle is fixedly installed on one end of the bidirectional screw, and two movable bars are slidably connected to the top of the support frame. The two movable bars are threadedly connected to the bidirectional screw, and two symmetrically arranged movable grooves are provided at the bottom of the movable bars. A sliding rod is fixedly installed on the inner wall of the movable groove, and a movable block is slidably connected to the sliding rod, and the movable block is rotatably connected to the corresponding top rod.

[0021] The rotating handle drives the bidirectional screw to rotate, and the bidirectional screw is connected to the two moving bars through a threaded connection, thereby driving the two moving bars to move in opposite directions. The moving bar is connected to the top rod through the rotation of the movable block, so that the support length of the top rod can be adjusted, thereby maintaining the maximum support stretching effect when the steel rope is hoisted at different heights, preventing the four steel ropes at the bottom from being disturbed, and stabilizing the fixed angle of the positioning plate. At the same time, the sliding connection between the slide bar in the movable groove and the movable block can buffer the lateral displacement when the top rod moves.

[0022] Compared with the prior art, the advantages of the present invention are: (1) In this solution, since the support rod and the support plate are threadedly connected, and the two pulleys are connected to the belt, the output shaft of the first motor can drive the top plate to move up and down, thereby adjusting the height of the hoisting. (2) Due to the rotational connection between the push rod, the push plate and the clamping rod, and the cooperation between the clamping shaft and the L-shaped clamping plate, the piston of the cylinder can drive the two clamping shafts to move upward, thereby pushing the steel structure and pressing and fixing it through the L-shaped clamping plate; (3) Due to the mutual meshing of the second worm and the second worm wheel, the rotating rod can drive the winch drum to reel in the two steel ropes on one side, thereby changing the angle between the positioning plate and the steel structure, making it easier to adjust the operation at different angles when installing the steel structure; (4) The diameter of the take-up reel is set to half the diameter of the winding reel, so that the support frame can always remain in the middle position between the winding reel and the positioning plate, thereby maintaining the best support state, which is convenient for the stable placement of the positioning plate. At the same time, the bidirectional screw is threadedly connected to the two moving bars, which can adjust the stretching angle of the four steel ropes, thereby maintaining the stable angle of the positioning plate.

[0023] The invention is simple to operate and easy to use, can facilitate quick fixing of the steel structure, can adjust the hoisting height and the installation angle when the steel structure is hoisted, and can ensure the stability of the steel structure during installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic structural diagram of an adjustable lifting device for installing a building steel structure proposed by the present invention; Figure 2 This is a rear structural schematic diagram of an adjustable lifting device for installing a building steel structure proposed by the present invention; Figure 3 This is a schematic diagram of the structure of an adjustable lifting device for installing a building steel structure proposed by the present invention from a bottom-up perspective; Figure 4 A schematic diagram of the lifting mechanism structure of an adjustable lifting device for installing a building steel structure proposed by the present invention; Figure 5 A schematic diagram of the structure of a clamping mechanism and an adjusting mechanism of an adjustable lifting device for installing a building steel structure proposed by the present invention; Figure 6 A schematic diagram of the supporting mechanism structure of an adjustable lifting device for installing a building steel structure proposed by the present invention; Figure 7 A schematic diagram of the transmission connection structure of a moving bar and a top rod of an adjustable lifting device for installing a building steel structure proposed by the present invention; Figure 8 This is a schematic diagram of the structure of a reeling mechanism of an adjustable lifting device for installing a building steel structure proposed by the present invention; Fig. 9 The invention proposes an adjustable lifting device for installing a building steel structure. Figure 2 Schematic diagram of the structure of part A; Fig.10 The invention proposes an adjustable lifting device for installing a building steel structure. Figure 2 Schematic diagram of the structure of part B.

[0025] In the figure: 1, bottom plate; 2, support plate; 3, top plate; 4, lifting mechanism; 41, support rod; 42, first motor; 43, pulley; 44, belt; 5, steel rope; 6, winding mechanism; 61, mounting plate; 62, mounting frame; 63, winding shaft; 64, winding drum; 65, positioning box; 66, second motor; 67, active rod; 68, first worm; 69, first worm wheel; 7, angle adjustment mechanism; 71, positioning seat; 72, rotating rod; 73, winding drum; 74, fixing box; 75, third motor; 76, rotating shaft; 7 7. Second worm; 78. Second worm wheel; 8. Clamping mechanism; 81. Positioning plate; 82. Cylinder; 83. Clamping rod; 84. Clamping shaft; 85. Push plate; 86. Push rod; 87. Fixed plate; 88. L-shaped clamping plate; 9. Support mechanism; 91. Support frame; 92. Push rod; 93. Conductor coil; 94. Moving bar; 95. Fixed seat; 96. Bidirectional screw; 97. Handle; 10. Brake wheel; 11. Lateral pull rod; 12. Connecting rod; 13. Take-up reel; 14. Pull rope; 15. Movable groove; 16. Sliding rod; 17. Movable block. DETAILED DESCRIPTION

[0026] The technical solution of this embodiment will be clearly and completely described below in conjunction with the drawings in this embodiment. Obviously, the described embodiment is only a part of this embodiment, rather than all of the embodiments.

[0027] Reference Figure 1-10 , an adjustable lifting device for installing a building steel structure, comprising: Two bottom plates 1, support plates 2 are fixedly mounted on the top of the two bottom plates 1, and a top plate 3 is provided above the two support plates 2; A lateral pull rod 11 is fixedly installed on both sides of the two support plates 2, and the lateral pull rod 11 is fixedly connected to the bottom plate 1. The bottom of the bottom plate 1 is rotatably connected to two symmetrically arranged brake wheels 10, and a connecting rod 12 is fixedly installed between the two bottom plates 1; The lifting mechanism 4 is installed on the support plate 2 and is transmission-connected with the top plate 3; The winding mechanism 6 is installed on the top of the top plate 3. Four steel ropes 5 are arranged on the winding mechanism 6. The winding mechanism 6 includes a mounting plate 61. Four symmetrical mounting brackets 62 are fixedly installed on the top of the mounting plate 61. A winding shaft 63 is rotatably connected between two mounting brackets 62 on the same side. Two winding drums 64 are fixedly sleeved on the winding shaft 63. The steel ropes 5 are wound on the corresponding winding drums 64. The clamping mechanism 8 is installed at the bottom end of the four steel ropes 5. The clamping mechanism 8 includes a positioning plate 81, the positioning plate 81 is connected to the four steel ropes 5, the bottom of the positioning plate 81 is rotatably connected to a clamping rod 83, and one end of the clamping rod 83 is fixedly installed with a clamping shaft 84; Angle adjustment mechanism 7 is mounted on the positioning plate 81 and cooperates with the corresponding two steel ropes 5; The supporting mechanism 9 is installed between the four steel ropes 5 and cooperates with the positioning plate 81 and the four mounting frames 62 .

[0028] In this embodiment, the lifting mechanism 4 includes a first motor 42, a support rod 41 is threadedly connected to the top of the support plate 2, the two support rods 41 are rotatably connected to the top plate 3, the first motor 42 is fixedly installed on the top of the top plate 3, the output shaft of the first motor 42 is threadedly connected to the corresponding support rod 41, a pulley 43 is fixedly sleeved on the support rod 41, and the two pulleys 43 are transmission-connected with the same belt 44; Specifically, the output shaft of the first motor 42 drives the two support rods 41 to rotate simultaneously through the transmission connection of the two pulleys 43 and the belt 44. The rotating support rods 41 are connected to the support plate 2 through threads, thereby driving the top plate 3 to move up and down.

[0029] In this embodiment, the winding mechanism 6 also includes two positioning boxes 65, the two positioning boxes 65 are fixedly connected to the corresponding two mounting frames 62, the winding shaft 63 is rotatably connected to the corresponding positioning boxes 65, and the same active rod 67 is rotatably connected between the two positioning boxes 65. A second motor 66 is fixedly installed on one of the two positioning boxes 65, and the output shaft of the second motor 66 is fixedly connected to the active rod 67. Two first worm gears 68 are fixedly installed on the active rod 67. A first worm gear 69 is fixedly installed on one end of the winding shaft 63, and the first worm gear 68 is meshed with the corresponding first worm gear 69.

[0030] Specifically, the setting of the two positioning boxes 65 can position and support the two active rods 67. At the same time, the output shaft of the second motor 66 drives the active rod 67 to rotate. The active rod 67 drives the winding shaft 63 to rotate through the mutual engagement of the first worm 68 and the first worm wheel 69. The winding shaft 63 drives the two winding drums 64 to rotate, so that the four steel ropes 5 can be wound up, and then the steel structure can be lifted and hoisted. At the same time, the engagement of the first worm 68 and the first worm wheel 69 can facilitate the self-locking of the winding shaft 63.

[0031] In this embodiment, the clamping mechanism 8 also includes a cylinder 82, which is fixedly installed on the top of the positioning plate 81. A push plate 85 is fixedly installed on the piston of the cylinder 82. The bottom of the push plate 85 is rotatably connected to two symmetrically arranged push rods 86. The push rods 86 are rotatably connected to the corresponding clamping rods 83. A fixing plate 87 is fixedly installed on the bottom of the positioning plate 81. An L-shaped clamping plate 88 is fixedly installed on the bottom of the fixing plate 87. The L-shaped clamping plate 88 cooperates with the two clamping shafts 84.

[0032] Specifically, the piston of the cylinder 82 can drive the push plate 85 to move downward, and the push plate 85 pushes the two push rods 86 to move. The push rod 86 is connected to the clamp rod 83 through rotation, so that it can push the clamp rod 83 to change its angle. The clamp rod 83 fixes the steel structure through the clamping shaft 84. The setting of the L-shaped clamping plate 88 can facilitate the top pressure on the steel structure, thereby clamping and positioning the steel structure.

[0033] In this embodiment, the angle adjustment mechanism 7 includes a third motor 75, two positioning seats 71 are fixedly installed on the top of the positioning plate 81, and the same rotating rod 72 is rotatably connected between the two positioning seats 71. The two ends of the rotating rod 72 are fixedly installed with a winch drum 73, and the winch drum 73 is connected to the corresponding two steel ropes 5 by winding. The other two steel ropes 5 are fixedly connected to the positioning plate 81, and a fixing box 74 is fixedly installed on the top of the positioning plate 81. The third motor 75 is fixedly installed on one side of the fixing box 74, and a rotating shaft 76 is fixedly installed on the output shaft of the third motor 75. The rotating shaft 76 is transmission-connected to the rotating rod 72, and a second worm 77 is fixedly installed on the rotating shaft 76. A second worm wheel 78 is fixedly installed on the rotating rod 72, and the second worm 77 and the second worm wheel 78 are meshed with each other.

[0034] Specifically, the rotating rotating rod 72 can drive the two winch drums 73 to rotate. The two winch drums 73 can be wound with the steel rope 5 to reel in or unwind the two steel ropes 5 on one side, so that the steel ropes 5 on the left and right sides form an upper and lower difference, thereby driving the steel structure on the positioning plate 81 to adjust the angle, so that it can adapt to different installation conditions during installation. The output shaft of the third motor 75 drives the rotating shaft 76 to rotate, and the rotating shaft 76 drives the rotating rod 72 to rotate through the mutual engagement of the second worm 77 and the second worm wheel 78. At the same time, the mutual engagement of the second worm 77 and the second worm wheel 78 can form a self-locking effect on the rotating rod 72, thereby stabilizing the angle.

[0035] In this embodiment, the support mechanism 9 includes a support frame 91, and two take-up drums 13 are fixedly installed on the winding shaft 63. The diameter of the take-up drum 13 is half of the diameter of the winding drum 64. A pull rope 14 is wound on the take-up drum 13, and the two pull ropes 14 are fixedly connected to the support frame 91. Two push rods 92 are slidably connected to both sides of the support frame 91. A wire coil 93 is fixedly installed at one end of the push rod 92. The steel rope 5 is located in the corresponding wire coil 93. Two fixed seats 95 are fixedly installed on the top of the support frame 91. The same bidirectional screw 96 is rotatably connected between the two fixed seats 95. A handle 97 is fixedly installed at one end of the bidirectional screw 96. Two moving bars 94 are slidably connected to the top of the support frame 91. The two moving bars 94 are threadedly connected to the bidirectional screw 96. The bottom of the moving bar 94 is provided with two symmetrically arranged movable grooves 15. A sliding rod 16 is fixedly installed on the inner wall of the movable groove 15. A movable block 17 is slidably connected to the sliding rod 16. The movable block 17 is rotatably connected to the corresponding push rod 92. Specifically, the arrangement of the push rod 92 and the wire coil 93 on the support frame 91 can facilitate the pushing of the four steel ropes 5, so that the four steel ropes 5 have the force of stretching outward, thereby maintaining the stable angle of the positioning plate 81. When the winding shaft 63 rotates, the take-up drum 13 is driven to rotate, and the take-up drum 13 shrinks the height of the support frame 91 through the pull rope 14. At the same time, the diameter of the take-up drum 13 is set to half the diameter of the winding drum 64, so that the support frame 91 can always be maintained in the middle position between the winding drum 64 and the positioning plate 81, thereby maintaining the best support state, and the rotating handle 97 The bidirectional screw 96 is driven to rotate. The bidirectional screw 96 is threadedly connected to the two moving bars 94, thereby driving the two moving bars 94 to move in opposite directions. The moving bar 94 is rotationally connected to the top rod 92 through the movable block 17, so that the support length of the top rod 92 can be adjusted, and then when the steel rope 5 is hoisted at different heights, the maximum support stretching effect can be maintained, and the four steel ropes 5 at the bottom can be prevented from being disturbed. At the same time, the fixed angle of the positioning plate 81 can be stabilized. At the same time, the sliding connection between the slide bar 16 in the movable groove 15 and the movable block 17 can buffer the lateral displacement of the top rod 92 when it moves.

[0036] Working principle: when working, place the steel structure above the two clamping shafts 84 and below the L-shaped clamping plate 88, start the switch of the cylinder 82, the piston of the cylinder 82 drives the push plate 85 to move downward, the push plate 85 drives the two push rods 86 to move, the push rod 86 is connected with the rotation of the clamping rod 83, so as to push the clamping rod 83 to change the angle, the clamping rod 83 forms a clamping fixation on the steel structure through the clamping shaft 84, the setting of the L-shaped clamping plate 88 can facilitate the top pressure on the steel structure, so as to clamp and position the steel structure, when lifting, start the switch of the second motor 66, the output shaft of the second motor 66 drives the active rod 67 to rotate, and the active rod 67 drives the winding shaft 63 through the mutual engagement of the first worm 68 and the first worm wheel 69 The winding shaft 63 drives the two winding drums 64 to rotate, so that the four steel ropes 5 can be wound up, and then the steel structure can be lifted and hoisted. At the same time, the meshing of the first worm 68 and the first worm wheel 69 can facilitate the self-locking of the winding shaft 63. At the same time, the setting of the top rod 92 and the wire coil 93 on the support frame 91 can facilitate the pushing of the four steel ropes 5, so that the four steel ropes 5 have the force of stretching outward, so as to maintain the stable angle of the positioning plate 81. When the winding shaft 63 rotates, it drives the take-up drum 13 to rotate, and the take-up drum 13 shrinks the height of the support frame 91 through the pull rope 14. At the same time, the diameter of the take-up drum 13 is set to half the diameter of the winding drum 64, so that the support frame 91 can always maintain the distance between the winding drum 64 and the positioning plate 81. The middle position between the positioning plates 81 can be maintained, thereby maintaining the best supporting state. The rotating handle 97 drives the bidirectional screw 96 to rotate. The bidirectional screw 96 is threadedly connected with the two moving bars 94, thereby driving the two moving bars 94 to move in opposite directions. The moving bar 94 is rotatably connected with the top rod 92 through the movable block 17, thereby being able to adjust the support length of the top rod 92, thereby being able to maintain the maximum support stretching effect when the steel rope 5 is hoisted at different heights, and prevent the four steel ropes 5 at the bottom from being disturbed. At the same time, it can also stabilize the fixed angle of the positioning plate 81. At the same time, the sliding connection between the slide bar 16 in the movable groove 15 and the movable block 17 can buffer the lateral displacement of the top rod 92 when it moves. When the installation angle of the steel structure needs to be adjusted, the start The third motor 75 is switched on, and the output shaft of the third motor 75 drives the rotating shaft 76 to rotate. The rotating shaft 76 drives the rotating rod 72 to rotate through the mutual engagement of the second worm 77 and the second worm wheel 78. At the same time, the mutual engagement of the second worm 77 and the second worm wheel 78 can form a self-locking effect on the rotating rod 72, thereby stabilizing the angle. The rotating rotating rod 72 can drive the two winding drums 73 to rotate. The two winding drums 73 can wind or unwind the two steel ropes 5 on one side through the winding of the steel rope 5, so that the steel ropes 5 on the left and right sides form an upper and lower difference, thereby driving the steel structure on the positioning plate 81 to adjust the angle, so as to adapt to different installation conditions during installation. When the hoisting height needs to be adjusted, the first motor 42 is switched on.The output shaft of the first motor 42 drives the two support rods 41 to rotate simultaneously through the transmission connection of the two pulleys 43 and the belt 44. The rotating support rods 41 are connected to the support plate 2 through threads, thereby driving the top plate 3 to move up and down, thereby increasing the hoisting height of the positioning plate 81.

[0037] All structural shapes, sizes and materials included in the first embodiment of the present application can be selected and adjusted to meet specific usage conditions. The accompanying drawings are all schematic structural diagrams, and the specific actual sizes can be appropriately adjusted.

[0038] The above is only a preferred specific implementation of this embodiment, but the protection scope of this embodiment is not limited to this. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and inventive concept of this embodiment within the technical scope disclosed in this embodiment, which should be covered by the protection scope of this embodiment.

Claims

1. An adjustable lifting device for installing a building steel structure, characterized in that: include: Two bottom plates (1), a support plate (2) being fixedly mounted on the top of each of the two bottom plates (1), and a top plate (3) being arranged above the two support plates (2); Side pull rods (11) are fixedly installed on both sides of the two support plates (2), and the side pull rods (11) are fixedly connected to the bottom plate (1). The bottom of the bottom plate (1) is rotatably connected to two symmetrically arranged brake wheels (10), and the same connecting rod (12) is fixedly installed between the two bottom plates (1); A lifting mechanism (4) is mounted on the support plate (2) and is drivingly connected to the top plate (3); A winding mechanism (6) is mounted on the top of the top plate (3), and four steel ropes (5) are arranged on the winding mechanism (6). The winding mechanism (6) comprises a mounting plate (61), and four symmetrically arranged mounting frames (62) are fixedly mounted on the top of the mounting plate (61). A winding shaft (63) is rotatably connected between two mounting frames (62) on the same side, and two winding drums (64) are fixedly sleeved on the winding shaft (63), and the steel ropes (5) are wound on the corresponding winding drums (64); A clamping mechanism (8) is mounted on the bottom ends of the four steel ropes (5), the clamping mechanism (8) comprises a positioning plate (81), the positioning plate (81) is connected to the four steel ropes (5), a clamping rod (83) is rotatably connected to the bottom of the positioning plate (81), and a clamping shaft (84) is fixedly mounted on one end of the clamping rod (83); An angle adjustment mechanism (7) is mounted on the positioning plate (81) and cooperates with the corresponding two steel ropes (5); The support mechanism (9) is installed between the four steel ropes (5) and cooperates with the positioning plate (81) and the four mounting frames (62).

2. The adjustable lifting device for installing a building steel structure according to claim 1, characterized in that: The lifting mechanism (4) comprises a first motor (42), the top of the support plate (2) is threadedly connected to a support rod (41), the two support rods (41) are rotatably connected to the top plate (3), the first motor (42) is fixedly mounted on the top of the top plate (3), and the output shaft of the first motor (42) is threadedly connected to the corresponding support rod (41).

3. The adjustable lifting device for installing a building steel structure according to claim 2, characterized in that: A belt pulley (43) is fixedly mounted on the support rod (41), and the two belt pulleys (43) are transmission-connected to the same belt (44).

4. The adjustable lifting device for installing a building steel structure according to claim 1, characterized in that: The winding mechanism (6) further comprises two positioning boxes (65), the two positioning boxes (65) being fixedly connected to the two corresponding mounting frames (62), the winding shaft (63) being rotatably connected to the corresponding positioning boxes (65), a same active rod (67) being rotatably connected between the two positioning boxes (65), a second motor (66) being fixedly mounted on one of the two positioning boxes (65), an output shaft of the second motor (66) being fixedly connected to the active rod (67), two first worm gears (68) being fixedly mounted on the active rod (67), a first worm wheel (69) being fixedly mounted on one end of the winding shaft (63), the first worm gear (68) being meshed with the corresponding first worm wheel (69).

5. The adjustable lifting device for installing a building steel structure according to claim 1, characterized in that: The clamping mechanism (8) further comprises a cylinder (82), wherein the cylinder (82) is fixedly mounted on the top of the positioning plate (81), a push plate (85) is fixedly mounted on the piston of the cylinder (82), and the bottom of the push plate (85) is rotatably connected to two symmetrically arranged push rods (86), and the push rods (86) are rotatably connected to corresponding clamping rods (83).

6. The adjustable lifting device for installing a building steel structure according to claim 5, characterized in that: A fixing plate (87) is fixedly mounted on the bottom of the positioning plate (81), and an L-shaped clamping plate (88) is fixedly mounted on the bottom of the fixing plate (87), wherein the L-shaped clamping plate (88) cooperates with the two clamping shafts (84).

7. The adjustable lifting device for installing a building steel structure according to claim 6, characterized in that: The angle adjustment mechanism (7) comprises a third motor (75), two positioning seats (71) are fixedly mounted on the top of the positioning plate (81), a rotating rod (72) is rotatably connected between the two positioning seats (71), a winch drum (73) is fixedly mounted on both ends of the rotating rod (72), the winch drum (73) is wound and connected with two corresponding steel ropes (5), and the other two steel ropes (5) are fixedly connected with the positioning plate (81), a fixing box (74) is fixedly mounted on the top of the positioning plate (81), the third motor (75) is fixedly mounted on one side of the fixing box (74), and a rotating shaft (76) is fixedly mounted on the output shaft of the third motor (75), and the rotating shaft (76) is drivingly connected with the rotating rod (72).

8. The adjustable lifting device for installing a building steel structure according to claim 7, characterized in that: A second worm (77) is fixedly mounted on the rotating shaft (76), a second worm wheel (78) is fixedly mounted on the rotating rod (72), and the second worm (77) and the second worm wheel (78) are meshed with each other.

9. The adjustable lifting device for installing a building steel structure according to claim 1, characterized in that: The support mechanism (9) comprises a support frame (91), two wire take-up drums (13) are fixedly mounted on the winding shaft (63), the diameter of the wire take-up drum (13) is half the diameter of the winding drum (64), a pull rope (14) is wound around the wire take-up drum (13), the two pull ropes (14) are fixedly connected to the support frame (91), two push rods (92) are slidably connected to both sides of the support frame (91), a wire coil (93) is fixedly mounted on one end of the push rod (92), and the steel rope (5) is located in the corresponding wire coil (93).

10. The adjustable lifting device for installing a building steel structure according to claim 9, characterized in that: Two fixed seats (95) are fixedly installed on the top of the support frame (91), and a same bidirectional screw (96) is rotatably connected between the two fixed seats (95). A handle (97) is fixedly installed on one end of the bidirectional screw (96). Two moving bars (94) are slidably connected to the top of the support frame (91). The two moving bars (94) are threadedly connected to the bidirectional screw (96). Two symmetrically arranged movable grooves (15) are provided at the bottom of the movable bar (94). A sliding rod (16) is fixedly installed on the inner wall of the movable groove (15). A movable block (17) is slidably connected to the sliding rod (16). The movable block (17) is rotatably connected to the corresponding top rod (92).

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